{
  "id": "global-sea-level-monthly-csiro",
  "name": "Global Mean Sea Level Monthly (CSIRO 1880-2013)",
  "title": "Global Mean Sea Level Monthly (CSIRO 1880-2013)",
  "description": "1608 monthly global mean sea level observations (mm) reconstructed from tide gauges by CSIRO, 1880-2013. Source: CSIRO via datasets/sea-level-rise.",
  "category": "environment",
  "source": "https://github.com/datasets/sea-level-rise",
  "source_url": "https://github.com/datasets/sea-level-rise",
  "updated": "2026-04",
  "record_count": 1608,
  "columns": [
    {
      "key": "year",
      "label": "Year",
      "type": "number"
    },
    {
      "key": "month",
      "label": "Month",
      "type": "number"
    },
    {
      "key": "gmsl_mm",
      "label": "Gmsl Mm",
      "type": "number"
    },
    {
      "key": "uncertainty_mm",
      "label": "Uncertainty Mm",
      "type": "number"
    }
  ],
  "rows": [
    {
      "year": 1880,
      "month": 1,
      "gmsl_mm": -183,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1880,
      "month": 2,
      "gmsl_mm": -171.1,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1880,
      "month": 3,
      "gmsl_mm": -164.3,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1880,
      "month": 4,
      "gmsl_mm": -158.2,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1880,
      "month": 5,
      "gmsl_mm": -158.7,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1880,
      "month": 6,
      "gmsl_mm": -159.6,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1880,
      "month": 7,
      "gmsl_mm": -159.6,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1880,
      "month": 8,
      "gmsl_mm": -161.8,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1880,
      "month": 9,
      "gmsl_mm": -158.9,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1880,
      "month": 10,
      "gmsl_mm": -150.3,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1880,
      "month": 11,
      "gmsl_mm": -144.5,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1880,
      "month": 12,
      "gmsl_mm": -134.7,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1881,
      "month": 1,
      "gmsl_mm": -136.4,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1881,
      "month": 2,
      "gmsl_mm": -139.2,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1881,
      "month": 3,
      "gmsl_mm": -145.2,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1881,
      "month": 4,
      "gmsl_mm": -151.1,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1881,
      "month": 5,
      "gmsl_mm": -152.2,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1881,
      "month": 6,
      "gmsl_mm": -154.2,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1881,
      "month": 7,
      "gmsl_mm": -147.7,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1881,
      "month": 8,
      "gmsl_mm": -151.4,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1881,
      "month": 9,
      "gmsl_mm": -156,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1881,
      "month": 10,
      "gmsl_mm": -165.5,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1881,
      "month": 11,
      "gmsl_mm": -167.9,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1881,
      "month": 12,
      "gmsl_mm": -169.9,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1882,
      "month": 1,
      "gmsl_mm": -167.8,
      "uncertainty_mm": 24.2
    },
    {
      "year": 1882,
      "month": 2,
      "gmsl_mm": -162,
      "uncertainty_mm": 22.9
    },
    {
      "year": 1882,
      "month": 3,
      "gmsl_mm": -158.8,
      "uncertainty_mm": 22.9
    },
    {
      "year": 1882,
      "month": 4,
      "gmsl_mm": -160.6,
      "uncertainty_mm": 22.9
    },
    {
      "year": 1882,
      "month": 5,
      "gmsl_mm": -164.5,
      "uncertainty_mm": 22.9
    },
    {
      "year": 1882,
      "month": 6,
      "gmsl_mm": -165.2,
      "uncertainty_mm": 22.9
    },
    {
      "year": 1882,
      "month": 7,
      "gmsl_mm": -167.3,
      "uncertainty_mm": 22.9
    },
    {
      "year": 1882,
      "month": 8,
      "gmsl_mm": -169,
      "uncertainty_mm": 22.9
    },
    {
      "year": 1882,
      "month": 9,
      "gmsl_mm": -174.9,
      "uncertainty_mm": 22.9
    },
    {
      "year": 1882,
      "month": 10,
      "gmsl_mm": -181.5,
      "uncertainty_mm": 22.9
    },
    {
      "year": 1882,
      "month": 11,
      "gmsl_mm": -182.5,
      "uncertainty_mm": 22.9
    },
    {
      "year": 1882,
      "month": 12,
      "gmsl_mm": -184.5,
      "uncertainty_mm": 22.9
    },
    {
      "year": 1883,
      "month": 1,
      "gmsl_mm": -179.9,
      "uncertainty_mm": 22.8
    },
    {
      "year": 1883,
      "month": 2,
      "gmsl_mm": -180,
      "uncertainty_mm": 22.8
    },
    {
      "year": 1883,
      "month": 3,
      "gmsl_mm": -172.4,
      "uncertainty_mm": 22.8
    },
    {
      "year": 1883,
      "month": 4,
      "gmsl_mm": -172.3,
      "uncertainty_mm": 22.8
    },
    {
      "year": 1883,
      "month": 5,
      "gmsl_mm": -164,
      "uncertainty_mm": 22.8
    },
    {
      "year": 1883,
      "month": 6,
      "gmsl_mm": -163.6,
      "uncertainty_mm": 22.8
    },
    {
      "year": 1883,
      "month": 7,
      "gmsl_mm": -161.1,
      "uncertainty_mm": 22.8
    },
    {
      "year": 1883,
      "month": 8,
      "gmsl_mm": -162,
      "uncertainty_mm": 22.8
    },
    {
      "year": 1883,
      "month": 9,
      "gmsl_mm": -159.3,
      "uncertainty_mm": 22.8
    },
    {
      "year": 1883,
      "month": 10,
      "gmsl_mm": -158.2,
      "uncertainty_mm": 22.8
    },
    {
      "year": 1883,
      "month": 11,
      "gmsl_mm": -153.2,
      "uncertainty_mm": 22.8
    },
    {
      "year": 1883,
      "month": 12,
      "gmsl_mm": -149.1,
      "uncertainty_mm": 22.8
    },
    {
      "year": 1884,
      "month": 1,
      "gmsl_mm": -142.5,
      "uncertainty_mm": 22.2
    },
    {
      "year": 1884,
      "month": 2,
      "gmsl_mm": -139.5,
      "uncertainty_mm": 22.2
    },
    {
      "year": 1884,
      "month": 3,
      "gmsl_mm": -137,
      "uncertainty_mm": 22.2
    },
    {
      "year": 1884,
      "month": 4,
      "gmsl_mm": -135.2,
      "uncertainty_mm": 22.2
    },
    {
      "year": 1884,
      "month": 5,
      "gmsl_mm": -136,
      "uncertainty_mm": 22.2
    },
    {
      "year": 1884,
      "month": 6,
      "gmsl_mm": -140,
      "uncertainty_mm": 22.2
    },
    {
      "year": 1884,
      "month": 7,
      "gmsl_mm": -143.3,
      "uncertainty_mm": 22.2
    },
    {
      "year": 1884,
      "month": 8,
      "gmsl_mm": -146.8,
      "uncertainty_mm": 22.2
    },
    {
      "year": 1884,
      "month": 9,
      "gmsl_mm": -150.4,
      "uncertainty_mm": 22.2
    },
    {
      "year": 1884,
      "month": 10,
      "gmsl_mm": -150.4,
      "uncertainty_mm": 22.2
    },
    {
      "year": 1884,
      "month": 11,
      "gmsl_mm": -154,
      "uncertainty_mm": 22.2
    },
    {
      "year": 1884,
      "month": 12,
      "gmsl_mm": -149.9,
      "uncertainty_mm": 22.2
    },
    {
      "year": 1885,
      "month": 1,
      "gmsl_mm": -153.1,
      "uncertainty_mm": 22.2
    },
    {
      "year": 1885,
      "month": 2,
      "gmsl_mm": -148.3,
      "uncertainty_mm": 21.9
    },
    {
      "year": 1885,
      "month": 3,
      "gmsl_mm": -145.3,
      "uncertainty_mm": 21.9
    },
    {
      "year": 1885,
      "month": 4,
      "gmsl_mm": -142.7,
      "uncertainty_mm": 21.9
    },
    {
      "year": 1885,
      "month": 5,
      "gmsl_mm": -143.1,
      "uncertainty_mm": 21.9
    },
    {
      "year": 1885,
      "month": 6,
      "gmsl_mm": -142.7,
      "uncertainty_mm": 21.9
    },
    {
      "year": 1885,
      "month": 7,
      "gmsl_mm": -148.4,
      "uncertainty_mm": 21.9
    },
    {
      "year": 1885,
      "month": 8,
      "gmsl_mm": -143.2,
      "uncertainty_mm": 21.9
    },
    {
      "year": 1885,
      "month": 9,
      "gmsl_mm": -146.5,
      "uncertainty_mm": 21.9
    },
    {
      "year": 1885,
      "month": 10,
      "gmsl_mm": -141.2,
      "uncertainty_mm": 21.9
    },
    {
      "year": 1885,
      "month": 11,
      "gmsl_mm": -143.3,
      "uncertainty_mm": 21.9
    },
    {
      "year": 1885,
      "month": 12,
      "gmsl_mm": -145.1,
      "uncertainty_mm": 21.9
    },
    {
      "year": 1886,
      "month": 1,
      "gmsl_mm": -147.3,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1886,
      "month": 2,
      "gmsl_mm": -152.2,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1886,
      "month": 3,
      "gmsl_mm": -146.8,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1886,
      "month": 4,
      "gmsl_mm": -142,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1886,
      "month": 5,
      "gmsl_mm": -134.7,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1886,
      "month": 6,
      "gmsl_mm": -135.4,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1886,
      "month": 7,
      "gmsl_mm": -140.8,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1886,
      "month": 8,
      "gmsl_mm": -147.7,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1886,
      "month": 9,
      "gmsl_mm": -155.1,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1886,
      "month": 10,
      "gmsl_mm": -155.2,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1886,
      "month": 11,
      "gmsl_mm": -157.9,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1886,
      "month": 12,
      "gmsl_mm": -155.8,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1887,
      "month": 1,
      "gmsl_mm": -162.2,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1887,
      "month": 2,
      "gmsl_mm": -165.8,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1887,
      "month": 3,
      "gmsl_mm": -162.9,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1887,
      "month": 4,
      "gmsl_mm": -158.8,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1887,
      "month": 5,
      "gmsl_mm": -151.9,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1887,
      "month": 6,
      "gmsl_mm": -147.1,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1887,
      "month": 7,
      "gmsl_mm": -147.3,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1887,
      "month": 8,
      "gmsl_mm": -147.5,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1887,
      "month": 9,
      "gmsl_mm": -150.6,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1887,
      "month": 10,
      "gmsl_mm": -147.5,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1887,
      "month": 11,
      "gmsl_mm": -148.8,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1887,
      "month": 12,
      "gmsl_mm": -148,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1888,
      "month": 1,
      "gmsl_mm": -155.3,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1888,
      "month": 2,
      "gmsl_mm": -155.6,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1888,
      "month": 3,
      "gmsl_mm": -155,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1888,
      "month": 4,
      "gmsl_mm": -155.2,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1888,
      "month": 5,
      "gmsl_mm": -154.2,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1888,
      "month": 6,
      "gmsl_mm": -151.6,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1888,
      "month": 7,
      "gmsl_mm": -149,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1888,
      "month": 8,
      "gmsl_mm": -148.5,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1888,
      "month": 9,
      "gmsl_mm": -151.5,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1888,
      "month": 10,
      "gmsl_mm": -145,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1888,
      "month": 11,
      "gmsl_mm": -146,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1888,
      "month": 12,
      "gmsl_mm": -146,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1889,
      "month": 1,
      "gmsl_mm": -151.1,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1889,
      "month": 2,
      "gmsl_mm": -147.4,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1889,
      "month": 3,
      "gmsl_mm": -144.3,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1889,
      "month": 4,
      "gmsl_mm": -145,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1889,
      "month": 5,
      "gmsl_mm": -145.9,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1889,
      "month": 6,
      "gmsl_mm": -145.8,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1889,
      "month": 7,
      "gmsl_mm": -147,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1889,
      "month": 8,
      "gmsl_mm": -147.6,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1889,
      "month": 9,
      "gmsl_mm": -151.3,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1889,
      "month": 10,
      "gmsl_mm": -153.8,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1889,
      "month": 11,
      "gmsl_mm": -157.6,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1889,
      "month": 12,
      "gmsl_mm": -157.2,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1890,
      "month": 1,
      "gmsl_mm": -152.3,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1890,
      "month": 2,
      "gmsl_mm": -151.4,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1890,
      "month": 3,
      "gmsl_mm": -140,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1890,
      "month": 4,
      "gmsl_mm": -138.1,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1890,
      "month": 5,
      "gmsl_mm": -135.3,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1890,
      "month": 6,
      "gmsl_mm": -140.2,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1890,
      "month": 7,
      "gmsl_mm": -144.2,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1890,
      "month": 8,
      "gmsl_mm": -147.8,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1890,
      "month": 9,
      "gmsl_mm": -149.4,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1890,
      "month": 10,
      "gmsl_mm": -151.8,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1890,
      "month": 11,
      "gmsl_mm": -155.9,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1890,
      "month": 12,
      "gmsl_mm": -163.9,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1891,
      "month": 1,
      "gmsl_mm": -162.9,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1891,
      "month": 2,
      "gmsl_mm": -163.9,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1891,
      "month": 3,
      "gmsl_mm": -148.1,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1891,
      "month": 4,
      "gmsl_mm": -150.8,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1891,
      "month": 5,
      "gmsl_mm": -145.4,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1891,
      "month": 6,
      "gmsl_mm": -148.4,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1891,
      "month": 7,
      "gmsl_mm": -143.8,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1891,
      "month": 8,
      "gmsl_mm": -142.2,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1891,
      "month": 9,
      "gmsl_mm": -143.2,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1891,
      "month": 10,
      "gmsl_mm": -144.5,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1891,
      "month": 11,
      "gmsl_mm": -148.2,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1891,
      "month": 12,
      "gmsl_mm": -148.8,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1892,
      "month": 1,
      "gmsl_mm": -145.8,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1892,
      "month": 2,
      "gmsl_mm": -139.3,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1892,
      "month": 3,
      "gmsl_mm": -139.8,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1892,
      "month": 4,
      "gmsl_mm": -138.6,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1892,
      "month": 5,
      "gmsl_mm": -143.1,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1892,
      "month": 6,
      "gmsl_mm": -141.6,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1892,
      "month": 7,
      "gmsl_mm": -145.8,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1892,
      "month": 8,
      "gmsl_mm": -146.6,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1892,
      "month": 9,
      "gmsl_mm": -151.7,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1892,
      "month": 10,
      "gmsl_mm": -151.5,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1892,
      "month": 11,
      "gmsl_mm": -156.3,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1892,
      "month": 12,
      "gmsl_mm": -152.4,
      "uncertainty_mm": 20.7
    },
    {
      "year": 1893,
      "month": 1,
      "gmsl_mm": -147.5,
      "uncertainty_mm": 20.2
    },
    {
      "year": 1893,
      "month": 2,
      "gmsl_mm": -143.8,
      "uncertainty_mm": 20.2
    },
    {
      "year": 1893,
      "month": 3,
      "gmsl_mm": -136.7,
      "uncertainty_mm": 20.2
    },
    {
      "year": 1893,
      "month": 4,
      "gmsl_mm": -137.9,
      "uncertainty_mm": 20.2
    },
    {
      "year": 1893,
      "month": 5,
      "gmsl_mm": -139.2,
      "uncertainty_mm": 20.2
    },
    {
      "year": 1893,
      "month": 6,
      "gmsl_mm": -140.5,
      "uncertainty_mm": 20.2
    },
    {
      "year": 1893,
      "month": 7,
      "gmsl_mm": -140.7,
      "uncertainty_mm": 20.2
    },
    {
      "year": 1893,
      "month": 8,
      "gmsl_mm": -139,
      "uncertainty_mm": 20.2
    },
    {
      "year": 1893,
      "month": 9,
      "gmsl_mm": -139,
      "uncertainty_mm": 20.2
    },
    {
      "year": 1893,
      "month": 10,
      "gmsl_mm": -140.6,
      "uncertainty_mm": 20.2
    },
    {
      "year": 1893,
      "month": 11,
      "gmsl_mm": -145.1,
      "uncertainty_mm": 20.2
    },
    {
      "year": 1893,
      "month": 12,
      "gmsl_mm": -145.6,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1894,
      "month": 1,
      "gmsl_mm": -148.4,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1894,
      "month": 2,
      "gmsl_mm": -147.5,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1894,
      "month": 3,
      "gmsl_mm": -149.9,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1894,
      "month": 4,
      "gmsl_mm": -148.9,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1894,
      "month": 5,
      "gmsl_mm": -152.1,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1894,
      "month": 6,
      "gmsl_mm": -152.7,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1894,
      "month": 7,
      "gmsl_mm": -154.5,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1894,
      "month": 8,
      "gmsl_mm": -154.7,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1894,
      "month": 9,
      "gmsl_mm": -157.6,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1894,
      "month": 10,
      "gmsl_mm": -153.3,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1894,
      "month": 11,
      "gmsl_mm": -151.4,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1894,
      "month": 12,
      "gmsl_mm": -140.8,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1895,
      "month": 1,
      "gmsl_mm": -138.9,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1895,
      "month": 2,
      "gmsl_mm": -134.9,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1895,
      "month": 3,
      "gmsl_mm": -140,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1895,
      "month": 4,
      "gmsl_mm": -141.4,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1895,
      "month": 5,
      "gmsl_mm": -148,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1895,
      "month": 6,
      "gmsl_mm": -142.3,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1895,
      "month": 7,
      "gmsl_mm": -141,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1895,
      "month": 8,
      "gmsl_mm": -137.4,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1895,
      "month": 9,
      "gmsl_mm": -139.4,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1895,
      "month": 10,
      "gmsl_mm": -132.3,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1895,
      "month": 11,
      "gmsl_mm": -135.8,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1895,
      "month": 12,
      "gmsl_mm": -138.8,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1896,
      "month": 1,
      "gmsl_mm": -148.4,
      "uncertainty_mm": 21.6
    },
    {
      "year": 1896,
      "month": 2,
      "gmsl_mm": -158.4,
      "uncertainty_mm": 21.5
    },
    {
      "year": 1896,
      "month": 3,
      "gmsl_mm": -155.4,
      "uncertainty_mm": 21.5
    },
    {
      "year": 1896,
      "month": 4,
      "gmsl_mm": -150.4,
      "uncertainty_mm": 21.5
    },
    {
      "year": 1896,
      "month": 5,
      "gmsl_mm": -144.1,
      "uncertainty_mm": 21.5
    },
    {
      "year": 1896,
      "month": 6,
      "gmsl_mm": -135.3,
      "uncertainty_mm": 21.1
    },
    {
      "year": 1896,
      "month": 7,
      "gmsl_mm": -138,
      "uncertainty_mm": 21.1
    },
    {
      "year": 1896,
      "month": 8,
      "gmsl_mm": -138.9,
      "uncertainty_mm": 20.9
    },
    {
      "year": 1896,
      "month": 9,
      "gmsl_mm": -144.2,
      "uncertainty_mm": 20.9
    },
    {
      "year": 1896,
      "month": 10,
      "gmsl_mm": -146.9,
      "uncertainty_mm": 20.9
    },
    {
      "year": 1896,
      "month": 11,
      "gmsl_mm": -149.7,
      "uncertainty_mm": 20.9
    },
    {
      "year": 1896,
      "month": 12,
      "gmsl_mm": -152.1,
      "uncertainty_mm": 20.9
    },
    {
      "year": 1897,
      "month": 1,
      "gmsl_mm": -149.5,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1897,
      "month": 2,
      "gmsl_mm": -149.8,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1897,
      "month": 3,
      "gmsl_mm": -143.9,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1897,
      "month": 4,
      "gmsl_mm": -142.2,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1897,
      "month": 5,
      "gmsl_mm": -132.6,
      "uncertainty_mm": 20.8
    },
    {
      "year": 1897,
      "month": 6,
      "gmsl_mm": -130.8,
      "uncertainty_mm": 20.3
    },
    {
      "year": 1897,
      "month": 7,
      "gmsl_mm": -127.1,
      "uncertainty_mm": 20.3
    },
    {
      "year": 1897,
      "month": 8,
      "gmsl_mm": -129.8,
      "uncertainty_mm": 21
    },
    {
      "year": 1897,
      "month": 9,
      "gmsl_mm": -136.5,
      "uncertainty_mm": 21
    },
    {
      "year": 1897,
      "month": 10,
      "gmsl_mm": -143.5,
      "uncertainty_mm": 21
    },
    {
      "year": 1897,
      "month": 11,
      "gmsl_mm": -158.1,
      "uncertainty_mm": 21
    },
    {
      "year": 1897,
      "month": 12,
      "gmsl_mm": -155.5,
      "uncertainty_mm": 21
    },
    {
      "year": 1898,
      "month": 1,
      "gmsl_mm": -149,
      "uncertainty_mm": 19.7
    },
    {
      "year": 1898,
      "month": 2,
      "gmsl_mm": -134.5,
      "uncertainty_mm": 19.7
    },
    {
      "year": 1898,
      "month": 3,
      "gmsl_mm": -126.6,
      "uncertainty_mm": 19.7
    },
    {
      "year": 1898,
      "month": 4,
      "gmsl_mm": -124.9,
      "uncertainty_mm": 19.7
    },
    {
      "year": 1898,
      "month": 5,
      "gmsl_mm": -123.6,
      "uncertainty_mm": 19.7
    },
    {
      "year": 1898,
      "month": 6,
      "gmsl_mm": -129.7,
      "uncertainty_mm": 19.7
    },
    {
      "year": 1898,
      "month": 7,
      "gmsl_mm": -133.4,
      "uncertainty_mm": 19.7
    },
    {
      "year": 1898,
      "month": 8,
      "gmsl_mm": -139.5,
      "uncertainty_mm": 19.7
    },
    {
      "year": 1898,
      "month": 9,
      "gmsl_mm": -137.4,
      "uncertainty_mm": 19.7
    },
    {
      "year": 1898,
      "month": 10,
      "gmsl_mm": -132.3,
      "uncertainty_mm": 19.7
    },
    {
      "year": 1898,
      "month": 11,
      "gmsl_mm": -128.4,
      "uncertainty_mm": 19.7
    },
    {
      "year": 1898,
      "month": 12,
      "gmsl_mm": -127.3,
      "uncertainty_mm": 19.7
    },
    {
      "year": 1899,
      "month": 1,
      "gmsl_mm": -126.7,
      "uncertainty_mm": 19.4
    },
    {
      "year": 1899,
      "month": 2,
      "gmsl_mm": -129,
      "uncertainty_mm": 19.4
    },
    {
      "year": 1899,
      "month": 3,
      "gmsl_mm": -128,
      "uncertainty_mm": 19.4
    },
    {
      "year": 1899,
      "month": 4,
      "gmsl_mm": -125,
      "uncertainty_mm": 19.4
    },
    {
      "year": 1899,
      "month": 5,
      "gmsl_mm": -127.9,
      "uncertainty_mm": 19.4
    },
    {
      "year": 1899,
      "month": 6,
      "gmsl_mm": -128.6,
      "uncertainty_mm": 19.4
    },
    {
      "year": 1899,
      "month": 7,
      "gmsl_mm": -131.9,
      "uncertainty_mm": 19.4
    },
    {
      "year": 1899,
      "month": 8,
      "gmsl_mm": -125.8,
      "uncertainty_mm": 19.4
    },
    {
      "year": 1899,
      "month": 9,
      "gmsl_mm": -120.1,
      "uncertainty_mm": 19.4
    },
    {
      "year": 1899,
      "month": 10,
      "gmsl_mm": -114.3,
      "uncertainty_mm": 19.4
    },
    {
      "year": 1899,
      "month": 11,
      "gmsl_mm": -117.1,
      "uncertainty_mm": 19.4
    },
    {
      "year": 1899,
      "month": 12,
      "gmsl_mm": -122.5,
      "uncertainty_mm": 19.4
    },
    {
      "year": 1900,
      "month": 1,
      "gmsl_mm": -128.9,
      "uncertainty_mm": 18.3
    },
    {
      "year": 1900,
      "month": 2,
      "gmsl_mm": -130.8,
      "uncertainty_mm": 18.3
    },
    {
      "year": 1900,
      "month": 3,
      "gmsl_mm": -129.5,
      "uncertainty_mm": 18.3
    },
    {
      "year": 1900,
      "month": 4,
      "gmsl_mm": -129.8,
      "uncertainty_mm": 18.3
    },
    {
      "year": 1900,
      "month": 5,
      "gmsl_mm": -127.3,
      "uncertainty_mm": 18.3
    },
    {
      "year": 1900,
      "month": 6,
      "gmsl_mm": -128.2,
      "uncertainty_mm": 18.3
    },
    {
      "year": 1900,
      "month": 7,
      "gmsl_mm": -130.5,
      "uncertainty_mm": 18.3
    },
    {
      "year": 1900,
      "month": 8,
      "gmsl_mm": -128.7,
      "uncertainty_mm": 18.3
    },
    {
      "year": 1900,
      "month": 9,
      "gmsl_mm": -135.1,
      "uncertainty_mm": 18.3
    },
    {
      "year": 1900,
      "month": 10,
      "gmsl_mm": -130.2,
      "uncertainty_mm": 18.3
    },
    {
      "year": 1900,
      "month": 11,
      "gmsl_mm": -132.1,
      "uncertainty_mm": 18.3
    },
    {
      "year": 1900,
      "month": 12,
      "gmsl_mm": -130.1,
      "uncertainty_mm": 18.3
    },
    {
      "year": 1901,
      "month": 1,
      "gmsl_mm": -132.8,
      "uncertainty_mm": 18.3
    },
    {
      "year": 1901,
      "month": 2,
      "gmsl_mm": -134.7,
      "uncertainty_mm": 18.3
    },
    {
      "year": 1901,
      "month": 3,
      "gmsl_mm": -135,
      "uncertainty_mm": 17.4
    },
    {
      "year": 1901,
      "month": 4,
      "gmsl_mm": -131,
      "uncertainty_mm": 17.4
    },
    {
      "year": 1901,
      "month": 5,
      "gmsl_mm": -135,
      "uncertainty_mm": 17.4
    },
    {
      "year": 1901,
      "month": 6,
      "gmsl_mm": -133.7,
      "uncertainty_mm": 17.4
    },
    {
      "year": 1901,
      "month": 7,
      "gmsl_mm": -136.2,
      "uncertainty_mm": 17.4
    },
    {
      "year": 1901,
      "month": 8,
      "gmsl_mm": -131,
      "uncertainty_mm": 17.4
    },
    {
      "year": 1901,
      "month": 9,
      "gmsl_mm": -127,
      "uncertainty_mm": 17.4
    },
    {
      "year": 1901,
      "month": 10,
      "gmsl_mm": -124.1,
      "uncertainty_mm": 17.4
    },
    {
      "year": 1901,
      "month": 11,
      "gmsl_mm": -122.6,
      "uncertainty_mm": 17.4
    },
    {
      "year": 1901,
      "month": 12,
      "gmsl_mm": -123.3,
      "uncertainty_mm": 17.5
    },
    {
      "year": 1902,
      "month": 1,
      "gmsl_mm": -122.6,
      "uncertainty_mm": 17.4
    },
    {
      "year": 1902,
      "month": 2,
      "gmsl_mm": -122.1,
      "uncertainty_mm": 17.4
    },
    {
      "year": 1902,
      "month": 3,
      "gmsl_mm": -123.3,
      "uncertainty_mm": 17.4
    },
    {
      "year": 1902,
      "month": 4,
      "gmsl_mm": -128,
      "uncertainty_mm": 17.4
    },
    {
      "year": 1902,
      "month": 5,
      "gmsl_mm": -132.3,
      "uncertainty_mm": 17.4
    },
    {
      "year": 1902,
      "month": 6,
      "gmsl_mm": -132.9,
      "uncertainty_mm": 17.4
    },
    {
      "year": 1902,
      "month": 7,
      "gmsl_mm": -131.7,
      "uncertainty_mm": 17.3
    },
    {
      "year": 1902,
      "month": 8,
      "gmsl_mm": -127.8,
      "uncertainty_mm": 17.3
    },
    {
      "year": 1902,
      "month": 9,
      "gmsl_mm": -124.4,
      "uncertainty_mm": 17.3
    },
    {
      "year": 1902,
      "month": 10,
      "gmsl_mm": -121.8,
      "uncertainty_mm": 17.3
    },
    {
      "year": 1902,
      "month": 11,
      "gmsl_mm": -121.3,
      "uncertainty_mm": 17.3
    },
    {
      "year": 1902,
      "month": 12,
      "gmsl_mm": -122.8,
      "uncertainty_mm": 17.3
    },
    {
      "year": 1903,
      "month": 1,
      "gmsl_mm": -121.2,
      "uncertainty_mm": 17
    },
    {
      "year": 1903,
      "month": 2,
      "gmsl_mm": -121.7,
      "uncertainty_mm": 17
    },
    {
      "year": 1903,
      "month": 3,
      "gmsl_mm": -115,
      "uncertainty_mm": 17
    },
    {
      "year": 1903,
      "month": 4,
      "gmsl_mm": -110.3,
      "uncertainty_mm": 17
    },
    {
      "year": 1903,
      "month": 5,
      "gmsl_mm": -109.8,
      "uncertainty_mm": 17
    },
    {
      "year": 1903,
      "month": 6,
      "gmsl_mm": -110.6,
      "uncertainty_mm": 17
    },
    {
      "year": 1903,
      "month": 7,
      "gmsl_mm": -116.2,
      "uncertainty_mm": 17
    },
    {
      "year": 1903,
      "month": 8,
      "gmsl_mm": -119.5,
      "uncertainty_mm": 17
    },
    {
      "year": 1903,
      "month": 9,
      "gmsl_mm": -123.6,
      "uncertainty_mm": 17
    },
    {
      "year": 1903,
      "month": 10,
      "gmsl_mm": -120.6,
      "uncertainty_mm": 17
    },
    {
      "year": 1903,
      "month": 11,
      "gmsl_mm": -124.2,
      "uncertainty_mm": 16.7
    },
    {
      "year": 1903,
      "month": 12,
      "gmsl_mm": -121.5,
      "uncertainty_mm": 17.1
    },
    {
      "year": 1904,
      "month": 1,
      "gmsl_mm": -125.9,
      "uncertainty_mm": 17.1
    },
    {
      "year": 1904,
      "month": 2,
      "gmsl_mm": -118.2,
      "uncertainty_mm": 17.1
    },
    {
      "year": 1904,
      "month": 3,
      "gmsl_mm": -122.9,
      "uncertainty_mm": 17.1
    },
    {
      "year": 1904,
      "month": 4,
      "gmsl_mm": -123.3,
      "uncertainty_mm": 17.1
    },
    {
      "year": 1904,
      "month": 5,
      "gmsl_mm": -128.3,
      "uncertainty_mm": 16.8
    },
    {
      "year": 1904,
      "month": 6,
      "gmsl_mm": -126.6,
      "uncertainty_mm": 16.8
    },
    {
      "year": 1904,
      "month": 7,
      "gmsl_mm": -130.2,
      "uncertainty_mm": 16.8
    },
    {
      "year": 1904,
      "month": 8,
      "gmsl_mm": -131.2,
      "uncertainty_mm": 16.8
    },
    {
      "year": 1904,
      "month": 9,
      "gmsl_mm": -132.6,
      "uncertainty_mm": 16.8
    },
    {
      "year": 1904,
      "month": 10,
      "gmsl_mm": -131.6,
      "uncertainty_mm": 16.8
    },
    {
      "year": 1904,
      "month": 11,
      "gmsl_mm": -132.3,
      "uncertainty_mm": 16.8
    },
    {
      "year": 1904,
      "month": 12,
      "gmsl_mm": -134.8,
      "uncertainty_mm": 16.8
    },
    {
      "year": 1905,
      "month": 1,
      "gmsl_mm": -138,
      "uncertainty_mm": 15.4
    },
    {
      "year": 1905,
      "month": 2,
      "gmsl_mm": -140.1,
      "uncertainty_mm": 15.4
    },
    {
      "year": 1905,
      "month": 3,
      "gmsl_mm": -139.6,
      "uncertainty_mm": 15.4
    },
    {
      "year": 1905,
      "month": 4,
      "gmsl_mm": -138.1,
      "uncertainty_mm": 15.4
    },
    {
      "year": 1905,
      "month": 5,
      "gmsl_mm": -136,
      "uncertainty_mm": 15.4
    },
    {
      "year": 1905,
      "month": 6,
      "gmsl_mm": -134.4,
      "uncertainty_mm": 15.4
    },
    {
      "year": 1905,
      "month": 7,
      "gmsl_mm": -132,
      "uncertainty_mm": 15.4
    },
    {
      "year": 1905,
      "month": 8,
      "gmsl_mm": -128.1,
      "uncertainty_mm": 15.4
    },
    {
      "year": 1905,
      "month": 9,
      "gmsl_mm": -125.4,
      "uncertainty_mm": 15.4
    },
    {
      "year": 1905,
      "month": 10,
      "gmsl_mm": -127.6,
      "uncertainty_mm": 15.4
    },
    {
      "year": 1905,
      "month": 11,
      "gmsl_mm": -130.7,
      "uncertainty_mm": 15.4
    },
    {
      "year": 1905,
      "month": 12,
      "gmsl_mm": -134.8,
      "uncertainty_mm": 15.4
    },
    {
      "year": 1906,
      "month": 1,
      "gmsl_mm": -131.8,
      "uncertainty_mm": 14.7
    },
    {
      "year": 1906,
      "month": 2,
      "gmsl_mm": -129.5,
      "uncertainty_mm": 14.7
    },
    {
      "year": 1906,
      "month": 3,
      "gmsl_mm": -128.1,
      "uncertainty_mm": 14.7
    },
    {
      "year": 1906,
      "month": 4,
      "gmsl_mm": -128.9,
      "uncertainty_mm": 14.7
    },
    {
      "year": 1906,
      "month": 5,
      "gmsl_mm": -125.5,
      "uncertainty_mm": 14.7
    },
    {
      "year": 1906,
      "month": 6,
      "gmsl_mm": -124.1,
      "uncertainty_mm": 14.7
    },
    {
      "year": 1906,
      "month": 7,
      "gmsl_mm": -122.3,
      "uncertainty_mm": 14.7
    },
    {
      "year": 1906,
      "month": 8,
      "gmsl_mm": -125.4,
      "uncertainty_mm": 14.7
    },
    {
      "year": 1906,
      "month": 9,
      "gmsl_mm": -124.9,
      "uncertainty_mm": 14.7
    },
    {
      "year": 1906,
      "month": 10,
      "gmsl_mm": -125.7,
      "uncertainty_mm": 14.7
    },
    {
      "year": 1906,
      "month": 11,
      "gmsl_mm": -127.6,
      "uncertainty_mm": 14.7
    },
    {
      "year": 1906,
      "month": 12,
      "gmsl_mm": -128.8,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1907,
      "month": 1,
      "gmsl_mm": -129.5,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1907,
      "month": 2,
      "gmsl_mm": -126.4,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1907,
      "month": 3,
      "gmsl_mm": -125.2,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1907,
      "month": 4,
      "gmsl_mm": -122.8,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1907,
      "month": 5,
      "gmsl_mm": -125.1,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1907,
      "month": 6,
      "gmsl_mm": -123.2,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1907,
      "month": 7,
      "gmsl_mm": -126.4,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1907,
      "month": 8,
      "gmsl_mm": -123.8,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1907,
      "month": 9,
      "gmsl_mm": -131.7,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1907,
      "month": 10,
      "gmsl_mm": -133.1,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1907,
      "month": 11,
      "gmsl_mm": -137.6,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1907,
      "month": 12,
      "gmsl_mm": -134.5,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1908,
      "month": 1,
      "gmsl_mm": -131.1,
      "uncertainty_mm": 14.5
    },
    {
      "year": 1908,
      "month": 2,
      "gmsl_mm": -129.1,
      "uncertainty_mm": 14.5
    },
    {
      "year": 1908,
      "month": 3,
      "gmsl_mm": -129.2,
      "uncertainty_mm": 14.5
    },
    {
      "year": 1908,
      "month": 4,
      "gmsl_mm": -131.4,
      "uncertainty_mm": 14.5
    },
    {
      "year": 1908,
      "month": 5,
      "gmsl_mm": -132.5,
      "uncertainty_mm": 14.5
    },
    {
      "year": 1908,
      "month": 6,
      "gmsl_mm": -127.9,
      "uncertainty_mm": 14.5
    },
    {
      "year": 1908,
      "month": 7,
      "gmsl_mm": -127.3,
      "uncertainty_mm": 14.5
    },
    {
      "year": 1908,
      "month": 8,
      "gmsl_mm": -124.9,
      "uncertainty_mm": 14.5
    },
    {
      "year": 1908,
      "month": 9,
      "gmsl_mm": -130.1,
      "uncertainty_mm": 14.5
    },
    {
      "year": 1908,
      "month": 10,
      "gmsl_mm": -134.3,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1908,
      "month": 11,
      "gmsl_mm": -136.3,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1908,
      "month": 12,
      "gmsl_mm": -135.4,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1909,
      "month": 1,
      "gmsl_mm": -127.7,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1909,
      "month": 2,
      "gmsl_mm": -125.1,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1909,
      "month": 3,
      "gmsl_mm": -120.6,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1909,
      "month": 4,
      "gmsl_mm": -123.4,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1909,
      "month": 5,
      "gmsl_mm": -126.2,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1909,
      "month": 6,
      "gmsl_mm": -130.8,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1909,
      "month": 7,
      "gmsl_mm": -129,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1909,
      "month": 8,
      "gmsl_mm": -129.8,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1909,
      "month": 9,
      "gmsl_mm": -126.3,
      "uncertainty_mm": 15.1
    },
    {
      "year": 1909,
      "month": 10,
      "gmsl_mm": -126.4,
      "uncertainty_mm": 15.1
    },
    {
      "year": 1909,
      "month": 11,
      "gmsl_mm": -124.5,
      "uncertainty_mm": 15.1
    },
    {
      "year": 1909,
      "month": 12,
      "gmsl_mm": -125.9,
      "uncertainty_mm": 15.1
    },
    {
      "year": 1910,
      "month": 1,
      "gmsl_mm": -127.3,
      "uncertainty_mm": 15.1
    },
    {
      "year": 1910,
      "month": 2,
      "gmsl_mm": -130.6,
      "uncertainty_mm": 15.1
    },
    {
      "year": 1910,
      "month": 3,
      "gmsl_mm": -129.9,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1910,
      "month": 4,
      "gmsl_mm": -129.5,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1910,
      "month": 5,
      "gmsl_mm": -124.7,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1910,
      "month": 6,
      "gmsl_mm": -124,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1910,
      "month": 7,
      "gmsl_mm": -121.8,
      "uncertainty_mm": 14.9
    },
    {
      "year": 1910,
      "month": 8,
      "gmsl_mm": -124.4,
      "uncertainty_mm": 14.1
    },
    {
      "year": 1910,
      "month": 9,
      "gmsl_mm": -124.4,
      "uncertainty_mm": 14.1
    },
    {
      "year": 1910,
      "month": 10,
      "gmsl_mm": -126.4,
      "uncertainty_mm": 14.1
    },
    {
      "year": 1910,
      "month": 11,
      "gmsl_mm": -126.6,
      "uncertainty_mm": 14.1
    },
    {
      "year": 1910,
      "month": 12,
      "gmsl_mm": -127.4,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1911,
      "month": 1,
      "gmsl_mm": -127.4,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1911,
      "month": 2,
      "gmsl_mm": -123.9,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1911,
      "month": 3,
      "gmsl_mm": -121.1,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1911,
      "month": 4,
      "gmsl_mm": -120.6,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1911,
      "month": 5,
      "gmsl_mm": -121.8,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1911,
      "month": 6,
      "gmsl_mm": -121.2,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1911,
      "month": 7,
      "gmsl_mm": -120.1,
      "uncertainty_mm": 14.1
    },
    {
      "year": 1911,
      "month": 8,
      "gmsl_mm": -114.1,
      "uncertainty_mm": 14.1
    },
    {
      "year": 1911,
      "month": 9,
      "gmsl_mm": -111.2,
      "uncertainty_mm": 14
    },
    {
      "year": 1911,
      "month": 10,
      "gmsl_mm": -108.1,
      "uncertainty_mm": 14
    },
    {
      "year": 1911,
      "month": 11,
      "gmsl_mm": -112.7,
      "uncertainty_mm": 14
    },
    {
      "year": 1911,
      "month": 12,
      "gmsl_mm": -114.5,
      "uncertainty_mm": 14.1
    },
    {
      "year": 1912,
      "month": 1,
      "gmsl_mm": -121.9,
      "uncertainty_mm": 14.1
    },
    {
      "year": 1912,
      "month": 2,
      "gmsl_mm": -123.7,
      "uncertainty_mm": 14.1
    },
    {
      "year": 1912,
      "month": 3,
      "gmsl_mm": -127.2,
      "uncertainty_mm": 14.1
    },
    {
      "year": 1912,
      "month": 4,
      "gmsl_mm": -127.1,
      "uncertainty_mm": 14.1
    },
    {
      "year": 1912,
      "month": 5,
      "gmsl_mm": -126,
      "uncertainty_mm": 14.1
    },
    {
      "year": 1912,
      "month": 6,
      "gmsl_mm": -120.7,
      "uncertainty_mm": 14.1
    },
    {
      "year": 1912,
      "month": 7,
      "gmsl_mm": -119.9,
      "uncertainty_mm": 14.1
    },
    {
      "year": 1912,
      "month": 8,
      "gmsl_mm": -118.6,
      "uncertainty_mm": 14.2
    },
    {
      "year": 1912,
      "month": 9,
      "gmsl_mm": -119.1,
      "uncertainty_mm": 14.2
    },
    {
      "year": 1912,
      "month": 10,
      "gmsl_mm": -118.7,
      "uncertainty_mm": 14.4
    },
    {
      "year": 1912,
      "month": 11,
      "gmsl_mm": -116.7,
      "uncertainty_mm": 14.4
    },
    {
      "year": 1912,
      "month": 12,
      "gmsl_mm": -114.4,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1913,
      "month": 1,
      "gmsl_mm": -119.8,
      "uncertainty_mm": 14.3
    },
    {
      "year": 1913,
      "month": 2,
      "gmsl_mm": -123.2,
      "uncertainty_mm": 14
    },
    {
      "year": 1913,
      "month": 3,
      "gmsl_mm": -128.2,
      "uncertainty_mm": 14
    },
    {
      "year": 1913,
      "month": 4,
      "gmsl_mm": -127.7,
      "uncertainty_mm": 14
    },
    {
      "year": 1913,
      "month": 5,
      "gmsl_mm": -126,
      "uncertainty_mm": 14
    },
    {
      "year": 1913,
      "month": 6,
      "gmsl_mm": -120.7,
      "uncertainty_mm": 14
    },
    {
      "year": 1913,
      "month": 7,
      "gmsl_mm": -117.2,
      "uncertainty_mm": 14
    },
    {
      "year": 1913,
      "month": 8,
      "gmsl_mm": -114.3,
      "uncertainty_mm": 14
    },
    {
      "year": 1913,
      "month": 9,
      "gmsl_mm": -114,
      "uncertainty_mm": 14
    },
    {
      "year": 1913,
      "month": 10,
      "gmsl_mm": -114.8,
      "uncertainty_mm": 14
    },
    {
      "year": 1913,
      "month": 11,
      "gmsl_mm": -110.8,
      "uncertainty_mm": 14
    },
    {
      "year": 1913,
      "month": 12,
      "gmsl_mm": -116,
      "uncertainty_mm": 14.2
    },
    {
      "year": 1914,
      "month": 1,
      "gmsl_mm": -110.9,
      "uncertainty_mm": 14.2
    },
    {
      "year": 1914,
      "month": 2,
      "gmsl_mm": -117,
      "uncertainty_mm": 14.2
    },
    {
      "year": 1914,
      "month": 3,
      "gmsl_mm": -115.3,
      "uncertainty_mm": 14.2
    },
    {
      "year": 1914,
      "month": 4,
      "gmsl_mm": -118.1,
      "uncertainty_mm": 13.7
    },
    {
      "year": 1914,
      "month": 5,
      "gmsl_mm": -116.8,
      "uncertainty_mm": 13.7
    },
    {
      "year": 1914,
      "month": 6,
      "gmsl_mm": -119.9,
      "uncertainty_mm": 13.7
    },
    {
      "year": 1914,
      "month": 7,
      "gmsl_mm": -119.7,
      "uncertainty_mm": 13.7
    },
    {
      "year": 1914,
      "month": 8,
      "gmsl_mm": -122.5,
      "uncertainty_mm": 13.7
    },
    {
      "year": 1914,
      "month": 9,
      "gmsl_mm": -117,
      "uncertainty_mm": 13.7
    },
    {
      "year": 1914,
      "month": 10,
      "gmsl_mm": -111.8,
      "uncertainty_mm": 13.7
    },
    {
      "year": 1914,
      "month": 11,
      "gmsl_mm": -99,
      "uncertainty_mm": 13.7
    },
    {
      "year": 1914,
      "month": 12,
      "gmsl_mm": -88.6,
      "uncertainty_mm": 13.7
    },
    {
      "year": 1915,
      "month": 1,
      "gmsl_mm": -83.7,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1915,
      "month": 2,
      "gmsl_mm": -85.2,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1915,
      "month": 3,
      "gmsl_mm": -93.1,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1915,
      "month": 4,
      "gmsl_mm": -102.3,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1915,
      "month": 5,
      "gmsl_mm": -108.5,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1915,
      "month": 6,
      "gmsl_mm": -111.1,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1915,
      "month": 7,
      "gmsl_mm": -113.6,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1915,
      "month": 8,
      "gmsl_mm": -114.4,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1915,
      "month": 9,
      "gmsl_mm": -115.4,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1915,
      "month": 10,
      "gmsl_mm": -115.2,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1915,
      "month": 11,
      "gmsl_mm": -109.7,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1915,
      "month": 12,
      "gmsl_mm": -110,
      "uncertainty_mm": 13.8
    },
    {
      "year": 1916,
      "month": 1,
      "gmsl_mm": -103.7,
      "uncertainty_mm": 13
    },
    {
      "year": 1916,
      "month": 2,
      "gmsl_mm": -106.3,
      "uncertainty_mm": 13
    },
    {
      "year": 1916,
      "month": 3,
      "gmsl_mm": -101.1,
      "uncertainty_mm": 13
    },
    {
      "year": 1916,
      "month": 4,
      "gmsl_mm": -104.1,
      "uncertainty_mm": 13
    },
    {
      "year": 1916,
      "month": 5,
      "gmsl_mm": -102.8,
      "uncertainty_mm": 12.9
    },
    {
      "year": 1916,
      "month": 6,
      "gmsl_mm": -108,
      "uncertainty_mm": 12.9
    },
    {
      "year": 1916,
      "month": 7,
      "gmsl_mm": -111.7,
      "uncertainty_mm": 12.9
    },
    {
      "year": 1916,
      "month": 8,
      "gmsl_mm": -115.9,
      "uncertainty_mm": 12.9
    },
    {
      "year": 1916,
      "month": 9,
      "gmsl_mm": -113.6,
      "uncertainty_mm": 12.9
    },
    {
      "year": 1916,
      "month": 10,
      "gmsl_mm": -111.7,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1916,
      "month": 11,
      "gmsl_mm": -103.8,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1916,
      "month": 12,
      "gmsl_mm": -102.7,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1917,
      "month": 1,
      "gmsl_mm": -102.8,
      "uncertainty_mm": 13
    },
    {
      "year": 1917,
      "month": 2,
      "gmsl_mm": -109.1,
      "uncertainty_mm": 12.8
    },
    {
      "year": 1917,
      "month": 3,
      "gmsl_mm": -112.4,
      "uncertainty_mm": 12.8
    },
    {
      "year": 1917,
      "month": 4,
      "gmsl_mm": -115.9,
      "uncertainty_mm": 12.8
    },
    {
      "year": 1917,
      "month": 5,
      "gmsl_mm": -115.1,
      "uncertainty_mm": 12.8
    },
    {
      "year": 1917,
      "month": 6,
      "gmsl_mm": -113.9,
      "uncertainty_mm": 12.8
    },
    {
      "year": 1917,
      "month": 7,
      "gmsl_mm": -110.1,
      "uncertainty_mm": 12.8
    },
    {
      "year": 1917,
      "month": 8,
      "gmsl_mm": -110.7,
      "uncertainty_mm": 12.8
    },
    {
      "year": 1917,
      "month": 9,
      "gmsl_mm": -111.5,
      "uncertainty_mm": 12.8
    },
    {
      "year": 1917,
      "month": 10,
      "gmsl_mm": -113.1,
      "uncertainty_mm": 12.8
    },
    {
      "year": 1917,
      "month": 11,
      "gmsl_mm": -113.7,
      "uncertainty_mm": 12.8
    },
    {
      "year": 1917,
      "month": 12,
      "gmsl_mm": -111.3,
      "uncertainty_mm": 12.8
    },
    {
      "year": 1918,
      "month": 1,
      "gmsl_mm": -109.7,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1918,
      "month": 2,
      "gmsl_mm": -113.5,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1918,
      "month": 3,
      "gmsl_mm": -115.2,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1918,
      "month": 4,
      "gmsl_mm": -117.1,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1918,
      "month": 5,
      "gmsl_mm": -114.6,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1918,
      "month": 6,
      "gmsl_mm": -112.7,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1918,
      "month": 7,
      "gmsl_mm": -112.1,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1918,
      "month": 8,
      "gmsl_mm": -113.6,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1918,
      "month": 9,
      "gmsl_mm": -109.9,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1918,
      "month": 10,
      "gmsl_mm": -112,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1918,
      "month": 11,
      "gmsl_mm": -111.8,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1918,
      "month": 12,
      "gmsl_mm": -116.4,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1919,
      "month": 1,
      "gmsl_mm": -118.1,
      "uncertainty_mm": 12.6
    },
    {
      "year": 1919,
      "month": 2,
      "gmsl_mm": -119.9,
      "uncertainty_mm": 12.6
    },
    {
      "year": 1919,
      "month": 3,
      "gmsl_mm": -118.3,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1919,
      "month": 4,
      "gmsl_mm": -115.4,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1919,
      "month": 5,
      "gmsl_mm": -112.7,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1919,
      "month": 6,
      "gmsl_mm": -106.2,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1919,
      "month": 7,
      "gmsl_mm": -107,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1919,
      "month": 8,
      "gmsl_mm": -103.5,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1919,
      "month": 9,
      "gmsl_mm": -105.2,
      "uncertainty_mm": 12.7
    },
    {
      "year": 1919,
      "month": 10,
      "gmsl_mm": -108.5,
      "uncertainty_mm": 12.6
    },
    {
      "year": 1919,
      "month": 11,
      "gmsl_mm": -109.9,
      "uncertainty_mm": 12.6
    },
    {
      "year": 1919,
      "month": 12,
      "gmsl_mm": -114.4,
      "uncertainty_mm": 13
    },
    {
      "year": 1920,
      "month": 1,
      "gmsl_mm": -114.9,
      "uncertainty_mm": 13
    },
    {
      "year": 1920,
      "month": 2,
      "gmsl_mm": -116.9,
      "uncertainty_mm": 13
    },
    {
      "year": 1920,
      "month": 3,
      "gmsl_mm": -116.2,
      "uncertainty_mm": 13
    },
    {
      "year": 1920,
      "month": 4,
      "gmsl_mm": -112.1,
      "uncertainty_mm": 13
    },
    {
      "year": 1920,
      "month": 5,
      "gmsl_mm": -107.4,
      "uncertainty_mm": 13
    },
    {
      "year": 1920,
      "month": 6,
      "gmsl_mm": -103.6,
      "uncertainty_mm": 13
    },
    {
      "year": 1920,
      "month": 7,
      "gmsl_mm": -103.2,
      "uncertainty_mm": 13
    },
    {
      "year": 1920,
      "month": 8,
      "gmsl_mm": -106,
      "uncertainty_mm": 13
    },
    {
      "year": 1920,
      "month": 9,
      "gmsl_mm": -109.6,
      "uncertainty_mm": 13
    },
    {
      "year": 1920,
      "month": 10,
      "gmsl_mm": -110.8,
      "uncertainty_mm": 13
    },
    {
      "year": 1920,
      "month": 11,
      "gmsl_mm": -112.2,
      "uncertainty_mm": 13
    },
    {
      "year": 1920,
      "month": 12,
      "gmsl_mm": -110.1,
      "uncertainty_mm": 13.3
    },
    {
      "year": 1921,
      "month": 1,
      "gmsl_mm": -110,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1921,
      "month": 2,
      "gmsl_mm": -106.9,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1921,
      "month": 3,
      "gmsl_mm": -105.5,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1921,
      "month": 4,
      "gmsl_mm": -104.1,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1921,
      "month": 5,
      "gmsl_mm": -102.1,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1921,
      "month": 6,
      "gmsl_mm": -103.5,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1921,
      "month": 7,
      "gmsl_mm": -105.1,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1921,
      "month": 8,
      "gmsl_mm": -111.3,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1921,
      "month": 9,
      "gmsl_mm": -114.2,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1921,
      "month": 10,
      "gmsl_mm": -113.1,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1921,
      "month": 11,
      "gmsl_mm": -113.6,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1921,
      "month": 12,
      "gmsl_mm": -109.4,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1922,
      "month": 1,
      "gmsl_mm": -111,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1922,
      "month": 2,
      "gmsl_mm": -106.7,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1922,
      "month": 3,
      "gmsl_mm": -108,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1922,
      "month": 4,
      "gmsl_mm": -107,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1922,
      "month": 5,
      "gmsl_mm": -105.9,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1922,
      "month": 6,
      "gmsl_mm": -106.2,
      "uncertainty_mm": 13.2
    },
    {
      "year": 1922,
      "month": 7,
      "gmsl_mm": -111.3,
      "uncertainty_mm": 13.2
    },
    {
      "year": 1922,
      "month": 8,
      "gmsl_mm": -114.7,
      "uncertainty_mm": 13.2
    },
    {
      "year": 1922,
      "month": 9,
      "gmsl_mm": -116.4,
      "uncertainty_mm": 13.2
    },
    {
      "year": 1922,
      "month": 10,
      "gmsl_mm": -112.5,
      "uncertainty_mm": 13.2
    },
    {
      "year": 1922,
      "month": 11,
      "gmsl_mm": -106.6,
      "uncertainty_mm": 13.2
    },
    {
      "year": 1922,
      "month": 12,
      "gmsl_mm": -103.2,
      "uncertainty_mm": 13.3
    },
    {
      "year": 1923,
      "month": 1,
      "gmsl_mm": -104.6,
      "uncertainty_mm": 13
    },
    {
      "year": 1923,
      "month": 2,
      "gmsl_mm": -109.2,
      "uncertainty_mm": 13
    },
    {
      "year": 1923,
      "month": 3,
      "gmsl_mm": -107.9,
      "uncertainty_mm": 13
    },
    {
      "year": 1923,
      "month": 4,
      "gmsl_mm": -103.6,
      "uncertainty_mm": 13
    },
    {
      "year": 1923,
      "month": 5,
      "gmsl_mm": -99.3,
      "uncertainty_mm": 12.9
    },
    {
      "year": 1923,
      "month": 6,
      "gmsl_mm": -101.9,
      "uncertainty_mm": 12.9
    },
    {
      "year": 1923,
      "month": 7,
      "gmsl_mm": -107.5,
      "uncertainty_mm": 12.9
    },
    {
      "year": 1923,
      "month": 8,
      "gmsl_mm": -110.5,
      "uncertainty_mm": 12.9
    },
    {
      "year": 1923,
      "month": 9,
      "gmsl_mm": -110.5,
      "uncertainty_mm": 12.9
    },
    {
      "year": 1923,
      "month": 10,
      "gmsl_mm": -109.7,
      "uncertainty_mm": 12.9
    },
    {
      "year": 1923,
      "month": 11,
      "gmsl_mm": -113.9,
      "uncertainty_mm": 12.9
    },
    {
      "year": 1923,
      "month": 12,
      "gmsl_mm": -116.7,
      "uncertainty_mm": 13
    },
    {
      "year": 1924,
      "month": 1,
      "gmsl_mm": -118,
      "uncertainty_mm": 13
    },
    {
      "year": 1924,
      "month": 2,
      "gmsl_mm": -112.7,
      "uncertainty_mm": 13
    },
    {
      "year": 1924,
      "month": 3,
      "gmsl_mm": -113.4,
      "uncertainty_mm": 13
    },
    {
      "year": 1924,
      "month": 4,
      "gmsl_mm": -111.8,
      "uncertainty_mm": 13
    },
    {
      "year": 1924,
      "month": 5,
      "gmsl_mm": -115.2,
      "uncertainty_mm": 13
    },
    {
      "year": 1924,
      "month": 6,
      "gmsl_mm": -115.3,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1924,
      "month": 7,
      "gmsl_mm": -116.8,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1924,
      "month": 8,
      "gmsl_mm": -116.1,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1924,
      "month": 9,
      "gmsl_mm": -115.6,
      "uncertainty_mm": 13.2
    },
    {
      "year": 1924,
      "month": 10,
      "gmsl_mm": -115.7,
      "uncertainty_mm": 13.2
    },
    {
      "year": 1924,
      "month": 11,
      "gmsl_mm": -117,
      "uncertainty_mm": 13
    },
    {
      "year": 1924,
      "month": 12,
      "gmsl_mm": -115.2,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1925,
      "month": 1,
      "gmsl_mm": -112.3,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1925,
      "month": 2,
      "gmsl_mm": -110.6,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1925,
      "month": 3,
      "gmsl_mm": -112.5,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1925,
      "month": 4,
      "gmsl_mm": -115.3,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1925,
      "month": 5,
      "gmsl_mm": -114.8,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1925,
      "month": 6,
      "gmsl_mm": -115,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1925,
      "month": 7,
      "gmsl_mm": -115.3,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1925,
      "month": 8,
      "gmsl_mm": -116.3,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1925,
      "month": 9,
      "gmsl_mm": -115,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1925,
      "month": 10,
      "gmsl_mm": -112.9,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1925,
      "month": 11,
      "gmsl_mm": -110.9,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1925,
      "month": 12,
      "gmsl_mm": -107.4,
      "uncertainty_mm": 14.2
    },
    {
      "year": 1926,
      "month": 1,
      "gmsl_mm": -111.3,
      "uncertainty_mm": 14.1
    },
    {
      "year": 1926,
      "month": 2,
      "gmsl_mm": -112.2,
      "uncertainty_mm": 14.1
    },
    {
      "year": 1926,
      "month": 3,
      "gmsl_mm": -115.4,
      "uncertainty_mm": 13.7
    },
    {
      "year": 1926,
      "month": 4,
      "gmsl_mm": -112.3,
      "uncertainty_mm": 13.7
    },
    {
      "year": 1926,
      "month": 5,
      "gmsl_mm": -110.3,
      "uncertainty_mm": 13.7
    },
    {
      "year": 1926,
      "month": 6,
      "gmsl_mm": -107.7,
      "uncertainty_mm": 13.7
    },
    {
      "year": 1926,
      "month": 7,
      "gmsl_mm": -104.5,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1926,
      "month": 8,
      "gmsl_mm": -97.9,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1926,
      "month": 9,
      "gmsl_mm": -97.2,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1926,
      "month": 10,
      "gmsl_mm": -96.3,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1926,
      "month": 11,
      "gmsl_mm": -105.8,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1926,
      "month": 12,
      "gmsl_mm": -109.4,
      "uncertainty_mm": 13.6
    },
    {
      "year": 1927,
      "month": 1,
      "gmsl_mm": -113.4,
      "uncertainty_mm": 13.2
    },
    {
      "year": 1927,
      "month": 2,
      "gmsl_mm": -109.1,
      "uncertainty_mm": 13.2
    },
    {
      "year": 1927,
      "month": 3,
      "gmsl_mm": -107.2,
      "uncertainty_mm": 13.2
    },
    {
      "year": 1927,
      "month": 4,
      "gmsl_mm": -104.9,
      "uncertainty_mm": 13.2
    },
    {
      "year": 1927,
      "month": 5,
      "gmsl_mm": -105.3,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1927,
      "month": 6,
      "gmsl_mm": -104.5,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1927,
      "month": 7,
      "gmsl_mm": -106.3,
      "uncertainty_mm": 13.1
    },
    {
      "year": 1927,
      "month": 8,
      "gmsl_mm": -103.7,
      "uncertainty_mm": 12.5
    },
    {
      "year": 1927,
      "month": 9,
      "gmsl_mm": -109.6,
      "uncertainty_mm": 12.5
    },
    {
      "year": 1927,
      "month": 10,
      "gmsl_mm": -106.9,
      "uncertainty_mm": 12.5
    },
    {
      "year": 1927,
      "month": 11,
      "gmsl_mm": -110.7,
      "uncertainty_mm": 12.5
    },
    {
      "year": 1927,
      "month": 12,
      "gmsl_mm": -111.5,
      "uncertainty_mm": 12.5
    },
    {
      "year": 1928,
      "month": 1,
      "gmsl_mm": -117.7,
      "uncertainty_mm": 12.5
    },
    {
      "year": 1928,
      "month": 2,
      "gmsl_mm": -117.6,
      "uncertainty_mm": 12.4
    },
    {
      "year": 1928,
      "month": 3,
      "gmsl_mm": -115.7,
      "uncertainty_mm": 12.3
    },
    {
      "year": 1928,
      "month": 4,
      "gmsl_mm": -110.4,
      "uncertainty_mm": 12.3
    },
    {
      "year": 1928,
      "month": 5,
      "gmsl_mm": -108.9,
      "uncertainty_mm": 12.3
    },
    {
      "year": 1928,
      "month": 6,
      "gmsl_mm": -106.3,
      "uncertainty_mm": 12.3
    },
    {
      "year": 1928,
      "month": 7,
      "gmsl_mm": -106,
      "uncertainty_mm": 12.3
    },
    {
      "year": 1928,
      "month": 8,
      "gmsl_mm": -105.6,
      "uncertainty_mm": 12.3
    },
    {
      "year": 1928,
      "month": 9,
      "gmsl_mm": -106.1,
      "uncertainty_mm": 12.3
    },
    {
      "year": 1928,
      "month": 10,
      "gmsl_mm": -111.2,
      "uncertainty_mm": 12.3
    },
    {
      "year": 1928,
      "month": 11,
      "gmsl_mm": -115.6,
      "uncertainty_mm": 12.3
    },
    {
      "year": 1928,
      "month": 12,
      "gmsl_mm": -118.7,
      "uncertainty_mm": 12.3
    },
    {
      "year": 1929,
      "month": 1,
      "gmsl_mm": -120.8,
      "uncertainty_mm": 12.3
    },
    {
      "year": 1929,
      "month": 2,
      "gmsl_mm": -115.8,
      "uncertainty_mm": 12.4
    },
    {
      "year": 1929,
      "month": 3,
      "gmsl_mm": -113.3,
      "uncertainty_mm": 12.4
    },
    {
      "year": 1929,
      "month": 4,
      "gmsl_mm": -107.4,
      "uncertainty_mm": 12.1
    },
    {
      "year": 1929,
      "month": 5,
      "gmsl_mm": -109.9,
      "uncertainty_mm": 12.1
    },
    {
      "year": 1929,
      "month": 6,
      "gmsl_mm": -106.1,
      "uncertainty_mm": 12.1
    },
    {
      "year": 1929,
      "month": 7,
      "gmsl_mm": -106,
      "uncertainty_mm": 12.1
    },
    {
      "year": 1929,
      "month": 8,
      "gmsl_mm": -106.4,
      "uncertainty_mm": 12.1
    },
    {
      "year": 1929,
      "month": 9,
      "gmsl_mm": -107,
      "uncertainty_mm": 12.1
    },
    {
      "year": 1929,
      "month": 10,
      "gmsl_mm": -109.4,
      "uncertainty_mm": 12.1
    },
    {
      "year": 1929,
      "month": 11,
      "gmsl_mm": -109.2,
      "uncertainty_mm": 12.1
    },
    {
      "year": 1929,
      "month": 12,
      "gmsl_mm": -112.1,
      "uncertainty_mm": 12.1
    },
    {
      "year": 1930,
      "month": 1,
      "gmsl_mm": -110.8,
      "uncertainty_mm": 12
    },
    {
      "year": 1930,
      "month": 2,
      "gmsl_mm": -112.3,
      "uncertainty_mm": 12
    },
    {
      "year": 1930,
      "month": 3,
      "gmsl_mm": -112.3,
      "uncertainty_mm": 12
    },
    {
      "year": 1930,
      "month": 4,
      "gmsl_mm": -114.3,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1930,
      "month": 5,
      "gmsl_mm": -112.7,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1930,
      "month": 6,
      "gmsl_mm": -105.7,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1930,
      "month": 7,
      "gmsl_mm": -98.2,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1930,
      "month": 8,
      "gmsl_mm": -96.1,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1930,
      "month": 9,
      "gmsl_mm": -98.5,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1930,
      "month": 10,
      "gmsl_mm": -101.5,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1930,
      "month": 11,
      "gmsl_mm": -105.6,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1930,
      "month": 12,
      "gmsl_mm": -107.8,
      "uncertainty_mm": 12.2
    },
    {
      "year": 1931,
      "month": 1,
      "gmsl_mm": -106.9,
      "uncertainty_mm": 12.2
    },
    {
      "year": 1931,
      "month": 2,
      "gmsl_mm": -109.1,
      "uncertainty_mm": 12.2
    },
    {
      "year": 1931,
      "month": 3,
      "gmsl_mm": -106.6,
      "uncertainty_mm": 12.2
    },
    {
      "year": 1931,
      "month": 4,
      "gmsl_mm": -108.5,
      "uncertainty_mm": 12.2
    },
    {
      "year": 1931,
      "month": 5,
      "gmsl_mm": -106.4,
      "uncertainty_mm": 12.2
    },
    {
      "year": 1931,
      "month": 6,
      "gmsl_mm": -105.9,
      "uncertainty_mm": 12.2
    },
    {
      "year": 1931,
      "month": 7,
      "gmsl_mm": -101.9,
      "uncertainty_mm": 12.2
    },
    {
      "year": 1931,
      "month": 8,
      "gmsl_mm": -103.7,
      "uncertainty_mm": 12.2
    },
    {
      "year": 1931,
      "month": 9,
      "gmsl_mm": -106,
      "uncertainty_mm": 12.2
    },
    {
      "year": 1931,
      "month": 10,
      "gmsl_mm": -109,
      "uncertainty_mm": 12.2
    },
    {
      "year": 1931,
      "month": 11,
      "gmsl_mm": -109.9,
      "uncertainty_mm": 12.2
    },
    {
      "year": 1931,
      "month": 12,
      "gmsl_mm": -106.5,
      "uncertainty_mm": 12.2
    },
    {
      "year": 1932,
      "month": 1,
      "gmsl_mm": -104.1,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1932,
      "month": 2,
      "gmsl_mm": -100.8,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1932,
      "month": 3,
      "gmsl_mm": -101.8,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1932,
      "month": 4,
      "gmsl_mm": -100.5,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1932,
      "month": 5,
      "gmsl_mm": -102.2,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1932,
      "month": 6,
      "gmsl_mm": -102.3,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1932,
      "month": 7,
      "gmsl_mm": -101.5,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1932,
      "month": 8,
      "gmsl_mm": -102.9,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1932,
      "month": 9,
      "gmsl_mm": -100.3,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1932,
      "month": 10,
      "gmsl_mm": -100.7,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1932,
      "month": 11,
      "gmsl_mm": -98.2,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1932,
      "month": 12,
      "gmsl_mm": -97.1,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1933,
      "month": 1,
      "gmsl_mm": -93.8,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1933,
      "month": 2,
      "gmsl_mm": -93,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1933,
      "month": 3,
      "gmsl_mm": -92.4,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1933,
      "month": 4,
      "gmsl_mm": -92.6,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1933,
      "month": 5,
      "gmsl_mm": -95.2,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1933,
      "month": 6,
      "gmsl_mm": -94.5,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1933,
      "month": 7,
      "gmsl_mm": -99,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1933,
      "month": 8,
      "gmsl_mm": -97.7,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1933,
      "month": 9,
      "gmsl_mm": -99,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1933,
      "month": 10,
      "gmsl_mm": -98.7,
      "uncertainty_mm": 11.7
    },
    {
      "year": 1933,
      "month": 11,
      "gmsl_mm": -102.2,
      "uncertainty_mm": 11.7
    },
    {
      "year": 1933,
      "month": 12,
      "gmsl_mm": -102.2,
      "uncertainty_mm": 12
    },
    {
      "year": 1934,
      "month": 1,
      "gmsl_mm": -101.5,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1934,
      "month": 2,
      "gmsl_mm": -99.1,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1934,
      "month": 3,
      "gmsl_mm": -96.7,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1934,
      "month": 4,
      "gmsl_mm": -97.8,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1934,
      "month": 5,
      "gmsl_mm": -98.7,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1934,
      "month": 6,
      "gmsl_mm": -102.7,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1934,
      "month": 7,
      "gmsl_mm": -103.3,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1934,
      "month": 8,
      "gmsl_mm": -107.3,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1934,
      "month": 9,
      "gmsl_mm": -105.8,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1934,
      "month": 10,
      "gmsl_mm": -108.5,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1934,
      "month": 11,
      "gmsl_mm": -102.6,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1934,
      "month": 12,
      "gmsl_mm": -100.5,
      "uncertainty_mm": 12
    },
    {
      "year": 1935,
      "month": 1,
      "gmsl_mm": -95.5,
      "uncertainty_mm": 12
    },
    {
      "year": 1935,
      "month": 2,
      "gmsl_mm": -93.3,
      "uncertainty_mm": 12
    },
    {
      "year": 1935,
      "month": 3,
      "gmsl_mm": -92.9,
      "uncertainty_mm": 12
    },
    {
      "year": 1935,
      "month": 4,
      "gmsl_mm": -91.7,
      "uncertainty_mm": 12
    },
    {
      "year": 1935,
      "month": 5,
      "gmsl_mm": -95,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1935,
      "month": 6,
      "gmsl_mm": -94.3,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1935,
      "month": 7,
      "gmsl_mm": -95.3,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1935,
      "month": 8,
      "gmsl_mm": -96.1,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1935,
      "month": 9,
      "gmsl_mm": -98.4,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1935,
      "month": 10,
      "gmsl_mm": -101.3,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1935,
      "month": 11,
      "gmsl_mm": -102.8,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1935,
      "month": 12,
      "gmsl_mm": -101,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1936,
      "month": 1,
      "gmsl_mm": -97.1,
      "uncertainty_mm": 11.7
    },
    {
      "year": 1936,
      "month": 2,
      "gmsl_mm": -94.7,
      "uncertainty_mm": 11.7
    },
    {
      "year": 1936,
      "month": 3,
      "gmsl_mm": -99.2,
      "uncertainty_mm": 11.7
    },
    {
      "year": 1936,
      "month": 4,
      "gmsl_mm": -102.5,
      "uncertainty_mm": 11.7
    },
    {
      "year": 1936,
      "month": 5,
      "gmsl_mm": -104.4,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1936,
      "month": 6,
      "gmsl_mm": -101.9,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1936,
      "month": 7,
      "gmsl_mm": -102.9,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1936,
      "month": 8,
      "gmsl_mm": -100.9,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1936,
      "month": 9,
      "gmsl_mm": -103.6,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1936,
      "month": 10,
      "gmsl_mm": -99.3,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1936,
      "month": 11,
      "gmsl_mm": -100.6,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1936,
      "month": 12,
      "gmsl_mm": -97.6,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1937,
      "month": 1,
      "gmsl_mm": -98.9,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1937,
      "month": 2,
      "gmsl_mm": -93.9,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1937,
      "month": 3,
      "gmsl_mm": -95.5,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1937,
      "month": 4,
      "gmsl_mm": -93.5,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1937,
      "month": 5,
      "gmsl_mm": -94.9,
      "uncertainty_mm": 11.9
    },
    {
      "year": 1937,
      "month": 6,
      "gmsl_mm": -96.9,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1937,
      "month": 7,
      "gmsl_mm": -96.6,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1937,
      "month": 8,
      "gmsl_mm": -97.4,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1937,
      "month": 9,
      "gmsl_mm": -93.9,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1937,
      "month": 10,
      "gmsl_mm": -93.4,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1937,
      "month": 11,
      "gmsl_mm": -91.5,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1937,
      "month": 12,
      "gmsl_mm": -89.9,
      "uncertainty_mm": 11.8
    },
    {
      "year": 1938,
      "month": 1,
      "gmsl_mm": -87.7,
      "uncertainty_mm": 11.7
    },
    {
      "year": 1938,
      "month": 2,
      "gmsl_mm": -86.4,
      "uncertainty_mm": 11.7
    },
    {
      "year": 1938,
      "month": 3,
      "gmsl_mm": -85.9,
      "uncertainty_mm": 11.7
    },
    {
      "year": 1938,
      "month": 4,
      "gmsl_mm": -88,
      "uncertainty_mm": 11.7
    },
    {
      "year": 1938,
      "month": 5,
      "gmsl_mm": -93.7,
      "uncertainty_mm": 11.7
    },
    {
      "year": 1938,
      "month": 6,
      "gmsl_mm": -96.8,
      "uncertainty_mm": 11.7
    },
    {
      "year": 1938,
      "month": 7,
      "gmsl_mm": -101.3,
      "uncertainty_mm": 11.7
    },
    {
      "year": 1938,
      "month": 8,
      "gmsl_mm": -97.8,
      "uncertainty_mm": 11.7
    },
    {
      "year": 1938,
      "month": 9,
      "gmsl_mm": -96.1,
      "uncertainty_mm": 11.7
    },
    {
      "year": 1938,
      "month": 10,
      "gmsl_mm": -90.7,
      "uncertainty_mm": 11.7
    },
    {
      "year": 1938,
      "month": 11,
      "gmsl_mm": -89.9,
      "uncertainty_mm": 11.7
    },
    {
      "year": 1938,
      "month": 12,
      "gmsl_mm": -90.6,
      "uncertainty_mm": 12.6
    },
    {
      "year": 1939,
      "month": 1,
      "gmsl_mm": -90,
      "uncertainty_mm": 12.4
    },
    {
      "year": 1939,
      "month": 2,
      "gmsl_mm": -94.4,
      "uncertainty_mm": 12.4
    },
    {
      "year": 1939,
      "month": 3,
      "gmsl_mm": -91.8,
      "uncertainty_mm": 12.4
    },
    {
      "year": 1939,
      "month": 4,
      "gmsl_mm": -89.7,
      "uncertainty_mm": 12.4
    },
    {
      "year": 1939,
      "month": 5,
      "gmsl_mm": -84.4,
      "uncertainty_mm": 12.4
    },
    {
      "year": 1939,
      "month": 6,
      "gmsl_mm": -77.7,
      "uncertainty_mm": 12.1
    },
    {
      "year": 1939,
      "month": 7,
      "gmsl_mm": -77.6,
      "uncertainty_mm": 12.1
    },
    {
      "year": 1939,
      "month": 8,
      "gmsl_mm": -80.4,
      "uncertainty_mm": 12.1
    },
    {
      "year": 1939,
      "month": 9,
      "gmsl_mm": -86.9,
      "uncertainty_mm": 12.1
    },
    {
      "year": 1939,
      "month": 10,
      "gmsl_mm": -91,
      "uncertainty_mm": 12
    },
    {
      "year": 1939,
      "month": 11,
      "gmsl_mm": -89.4,
      "uncertainty_mm": 12
    },
    {
      "year": 1939,
      "month": 12,
      "gmsl_mm": -89.2,
      "uncertainty_mm": 12.1
    },
    {
      "year": 1940,
      "month": 1,
      "gmsl_mm": -88.3,
      "uncertainty_mm": 11.1
    },
    {
      "year": 1940,
      "month": 2,
      "gmsl_mm": -89.5,
      "uncertainty_mm": 11.1
    },
    {
      "year": 1940,
      "month": 3,
      "gmsl_mm": -91.2,
      "uncertainty_mm": 11.1
    },
    {
      "year": 1940,
      "month": 4,
      "gmsl_mm": -95.9,
      "uncertainty_mm": 11
    },
    {
      "year": 1940,
      "month": 5,
      "gmsl_mm": -96.6,
      "uncertainty_mm": 11
    },
    {
      "year": 1940,
      "month": 6,
      "gmsl_mm": -101,
      "uncertainty_mm": 11
    },
    {
      "year": 1940,
      "month": 7,
      "gmsl_mm": -99.1,
      "uncertainty_mm": 11
    },
    {
      "year": 1940,
      "month": 8,
      "gmsl_mm": -96.2,
      "uncertainty_mm": 11
    },
    {
      "year": 1940,
      "month": 9,
      "gmsl_mm": -92.2,
      "uncertainty_mm": 11
    },
    {
      "year": 1940,
      "month": 10,
      "gmsl_mm": -87.9,
      "uncertainty_mm": 11
    },
    {
      "year": 1940,
      "month": 11,
      "gmsl_mm": -84.7,
      "uncertainty_mm": 11
    },
    {
      "year": 1940,
      "month": 12,
      "gmsl_mm": -83.7,
      "uncertainty_mm": 11
    },
    {
      "year": 1941,
      "month": 1,
      "gmsl_mm": -84.4,
      "uncertainty_mm": 10.9
    },
    {
      "year": 1941,
      "month": 2,
      "gmsl_mm": -81.2,
      "uncertainty_mm": 10.9
    },
    {
      "year": 1941,
      "month": 3,
      "gmsl_mm": -80.8,
      "uncertainty_mm": 10.9
    },
    {
      "year": 1941,
      "month": 4,
      "gmsl_mm": -79.4,
      "uncertainty_mm": 10.9
    },
    {
      "year": 1941,
      "month": 5,
      "gmsl_mm": -81.3,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1941,
      "month": 6,
      "gmsl_mm": -81.3,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1941,
      "month": 7,
      "gmsl_mm": -78.3,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1941,
      "month": 8,
      "gmsl_mm": -73.9,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1941,
      "month": 9,
      "gmsl_mm": -74.4,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1941,
      "month": 10,
      "gmsl_mm": -77.8,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1941,
      "month": 11,
      "gmsl_mm": -83.5,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1941,
      "month": 12,
      "gmsl_mm": -83.6,
      "uncertainty_mm": 10.9
    },
    {
      "year": 1942,
      "month": 1,
      "gmsl_mm": -85.2,
      "uncertainty_mm": 10.9
    },
    {
      "year": 1942,
      "month": 2,
      "gmsl_mm": -84.2,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1942,
      "month": 3,
      "gmsl_mm": -85.5,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1942,
      "month": 4,
      "gmsl_mm": -86,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1942,
      "month": 5,
      "gmsl_mm": -84.8,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1942,
      "month": 6,
      "gmsl_mm": -81.8,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1942,
      "month": 7,
      "gmsl_mm": -78.4,
      "uncertainty_mm": 10.9
    },
    {
      "year": 1942,
      "month": 8,
      "gmsl_mm": -75.4,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1942,
      "month": 9,
      "gmsl_mm": -73.5,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1942,
      "month": 10,
      "gmsl_mm": -74.4,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1942,
      "month": 11,
      "gmsl_mm": -74.5,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1942,
      "month": 12,
      "gmsl_mm": -76.9,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1943,
      "month": 1,
      "gmsl_mm": -74.4,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1943,
      "month": 2,
      "gmsl_mm": -73.6,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1943,
      "month": 3,
      "gmsl_mm": -74.1,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1943,
      "month": 4,
      "gmsl_mm": -74.3,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1943,
      "month": 5,
      "gmsl_mm": -78.4,
      "uncertainty_mm": 10.7
    },
    {
      "year": 1943,
      "month": 6,
      "gmsl_mm": -78.2,
      "uncertainty_mm": 10.7
    },
    {
      "year": 1943,
      "month": 7,
      "gmsl_mm": -82.3,
      "uncertainty_mm": 10.7
    },
    {
      "year": 1943,
      "month": 8,
      "gmsl_mm": -82.8,
      "uncertainty_mm": 10.7
    },
    {
      "year": 1943,
      "month": 9,
      "gmsl_mm": -84.2,
      "uncertainty_mm": 10.7
    },
    {
      "year": 1943,
      "month": 10,
      "gmsl_mm": -84.9,
      "uncertainty_mm": 10.7
    },
    {
      "year": 1943,
      "month": 11,
      "gmsl_mm": -86.1,
      "uncertainty_mm": 10.7
    },
    {
      "year": 1943,
      "month": 12,
      "gmsl_mm": -86.7,
      "uncertainty_mm": 11.2
    },
    {
      "year": 1944,
      "month": 1,
      "gmsl_mm": -83.2,
      "uncertainty_mm": 10.9
    },
    {
      "year": 1944,
      "month": 2,
      "gmsl_mm": -77.1,
      "uncertainty_mm": 10.9
    },
    {
      "year": 1944,
      "month": 3,
      "gmsl_mm": -74.4,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1944,
      "month": 4,
      "gmsl_mm": -79,
      "uncertainty_mm": 10.7
    },
    {
      "year": 1944,
      "month": 5,
      "gmsl_mm": -86.3,
      "uncertainty_mm": 10.6
    },
    {
      "year": 1944,
      "month": 6,
      "gmsl_mm": -92.1,
      "uncertainty_mm": 10.6
    },
    {
      "year": 1944,
      "month": 7,
      "gmsl_mm": -94.9,
      "uncertainty_mm": 10.6
    },
    {
      "year": 1944,
      "month": 8,
      "gmsl_mm": -95.1,
      "uncertainty_mm": 10.6
    },
    {
      "year": 1944,
      "month": 9,
      "gmsl_mm": -93.2,
      "uncertainty_mm": 10.6
    },
    {
      "year": 1944,
      "month": 10,
      "gmsl_mm": -90.2,
      "uncertainty_mm": 10.6
    },
    {
      "year": 1944,
      "month": 11,
      "gmsl_mm": -86.5,
      "uncertainty_mm": 10.6
    },
    {
      "year": 1944,
      "month": 12,
      "gmsl_mm": -85.3,
      "uncertainty_mm": 10.6
    },
    {
      "year": 1945,
      "month": 1,
      "gmsl_mm": -84.3,
      "uncertainty_mm": 10.6
    },
    {
      "year": 1945,
      "month": 2,
      "gmsl_mm": -84.6,
      "uncertainty_mm": 10.6
    },
    {
      "year": 1945,
      "month": 3,
      "gmsl_mm": -85.4,
      "uncertainty_mm": 10.6
    },
    {
      "year": 1945,
      "month": 4,
      "gmsl_mm": -84.1,
      "uncertainty_mm": 10.6
    },
    {
      "year": 1945,
      "month": 5,
      "gmsl_mm": -82.8,
      "uncertainty_mm": 10.6
    },
    {
      "year": 1945,
      "month": 6,
      "gmsl_mm": -78.8,
      "uncertainty_mm": 10.6
    },
    {
      "year": 1945,
      "month": 7,
      "gmsl_mm": -82.8,
      "uncertainty_mm": 10.6
    },
    {
      "year": 1945,
      "month": 8,
      "gmsl_mm": -83,
      "uncertainty_mm": 10.7
    },
    {
      "year": 1945,
      "month": 9,
      "gmsl_mm": -87.3,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1945,
      "month": 10,
      "gmsl_mm": -84.8,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1945,
      "month": 11,
      "gmsl_mm": -84.5,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1945,
      "month": 12,
      "gmsl_mm": -81.2,
      "uncertainty_mm": 11
    },
    {
      "year": 1946,
      "month": 1,
      "gmsl_mm": -82.3,
      "uncertainty_mm": 10.9
    },
    {
      "year": 1946,
      "month": 2,
      "gmsl_mm": -78.4,
      "uncertainty_mm": 10.9
    },
    {
      "year": 1946,
      "month": 3,
      "gmsl_mm": -79.2,
      "uncertainty_mm": 10.9
    },
    {
      "year": 1946,
      "month": 4,
      "gmsl_mm": -75.3,
      "uncertainty_mm": 10.9
    },
    {
      "year": 1946,
      "month": 5,
      "gmsl_mm": -72.8,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1946,
      "month": 6,
      "gmsl_mm": -69.8,
      "uncertainty_mm": 10.8
    },
    {
      "year": 1946,
      "month": 7,
      "gmsl_mm": -68.5,
      "uncertainty_mm": 10.4
    },
    {
      "year": 1946,
      "month": 8,
      "gmsl_mm": -71,
      "uncertainty_mm": 10.4
    },
    {
      "year": 1946,
      "month": 9,
      "gmsl_mm": -74.9,
      "uncertainty_mm": 10.4
    },
    {
      "year": 1946,
      "month": 10,
      "gmsl_mm": -78.4,
      "uncertainty_mm": 10.4
    },
    {
      "year": 1946,
      "month": 11,
      "gmsl_mm": -81,
      "uncertainty_mm": 10.4
    },
    {
      "year": 1946,
      "month": 12,
      "gmsl_mm": -81.7,
      "uncertainty_mm": 10.2
    },
    {
      "year": 1947,
      "month": 1,
      "gmsl_mm": -82.3,
      "uncertainty_mm": 10
    },
    {
      "year": 1947,
      "month": 2,
      "gmsl_mm": -80.1,
      "uncertainty_mm": 10
    },
    {
      "year": 1947,
      "month": 3,
      "gmsl_mm": -77.5,
      "uncertainty_mm": 9.8
    },
    {
      "year": 1947,
      "month": 4,
      "gmsl_mm": -79.8,
      "uncertainty_mm": 9.7
    },
    {
      "year": 1947,
      "month": 5,
      "gmsl_mm": -79.2,
      "uncertainty_mm": 9.5
    },
    {
      "year": 1947,
      "month": 6,
      "gmsl_mm": -77.2,
      "uncertainty_mm": 9.5
    },
    {
      "year": 1947,
      "month": 7,
      "gmsl_mm": -74.5,
      "uncertainty_mm": 9.5
    },
    {
      "year": 1947,
      "month": 8,
      "gmsl_mm": -71.9,
      "uncertainty_mm": 9.5
    },
    {
      "year": 1947,
      "month": 9,
      "gmsl_mm": -68.5,
      "uncertainty_mm": 9.5
    },
    {
      "year": 1947,
      "month": 10,
      "gmsl_mm": -64,
      "uncertainty_mm": 9.5
    },
    {
      "year": 1947,
      "month": 11,
      "gmsl_mm": -59.3,
      "uncertainty_mm": 9.5
    },
    {
      "year": 1947,
      "month": 12,
      "gmsl_mm": -61,
      "uncertainty_mm": 9.5
    },
    {
      "year": 1948,
      "month": 1,
      "gmsl_mm": -63.9,
      "uncertainty_mm": 9.3
    },
    {
      "year": 1948,
      "month": 2,
      "gmsl_mm": -68.4,
      "uncertainty_mm": 9.3
    },
    {
      "year": 1948,
      "month": 3,
      "gmsl_mm": -70.5,
      "uncertainty_mm": 9.3
    },
    {
      "year": 1948,
      "month": 4,
      "gmsl_mm": -70.5,
      "uncertainty_mm": 9.3
    },
    {
      "year": 1948,
      "month": 5,
      "gmsl_mm": -69.2,
      "uncertainty_mm": 9.3
    },
    {
      "year": 1948,
      "month": 6,
      "gmsl_mm": -69.3,
      "uncertainty_mm": 9.3
    },
    {
      "year": 1948,
      "month": 7,
      "gmsl_mm": -67.7,
      "uncertainty_mm": 9.3
    },
    {
      "year": 1948,
      "month": 8,
      "gmsl_mm": -69.7,
      "uncertainty_mm": 9.3
    },
    {
      "year": 1948,
      "month": 9,
      "gmsl_mm": -68.3,
      "uncertainty_mm": 9.2
    },
    {
      "year": 1948,
      "month": 10,
      "gmsl_mm": -68.7,
      "uncertainty_mm": 9.1
    },
    {
      "year": 1948,
      "month": 11,
      "gmsl_mm": -66.8,
      "uncertainty_mm": 9.2
    },
    {
      "year": 1948,
      "month": 12,
      "gmsl_mm": -65.6,
      "uncertainty_mm": 9.2
    },
    {
      "year": 1949,
      "month": 1,
      "gmsl_mm": -64,
      "uncertainty_mm": 8.8
    },
    {
      "year": 1949,
      "month": 2,
      "gmsl_mm": -63.6,
      "uncertainty_mm": 8.8
    },
    {
      "year": 1949,
      "month": 3,
      "gmsl_mm": -67.2,
      "uncertainty_mm": 8.8
    },
    {
      "year": 1949,
      "month": 4,
      "gmsl_mm": -69.8,
      "uncertainty_mm": 8.8
    },
    {
      "year": 1949,
      "month": 5,
      "gmsl_mm": -71.9,
      "uncertainty_mm": 8.8
    },
    {
      "year": 1949,
      "month": 6,
      "gmsl_mm": -72.2,
      "uncertainty_mm": 8.2
    },
    {
      "year": 1949,
      "month": 7,
      "gmsl_mm": -73.3,
      "uncertainty_mm": 8.2
    },
    {
      "year": 1949,
      "month": 8,
      "gmsl_mm": -72,
      "uncertainty_mm": 8.2
    },
    {
      "year": 1949,
      "month": 9,
      "gmsl_mm": -73.4,
      "uncertainty_mm": 8.2
    },
    {
      "year": 1949,
      "month": 10,
      "gmsl_mm": -69.7,
      "uncertainty_mm": 8.3
    },
    {
      "year": 1949,
      "month": 11,
      "gmsl_mm": -69.2,
      "uncertainty_mm": 8.1
    },
    {
      "year": 1949,
      "month": 12,
      "gmsl_mm": -67.7,
      "uncertainty_mm": 8.1
    },
    {
      "year": 1950,
      "month": 1,
      "gmsl_mm": -69.6,
      "uncertainty_mm": 8
    },
    {
      "year": 1950,
      "month": 2,
      "gmsl_mm": -70.8,
      "uncertainty_mm": 7.9
    },
    {
      "year": 1950,
      "month": 3,
      "gmsl_mm": -70.9,
      "uncertainty_mm": 7.9
    },
    {
      "year": 1950,
      "month": 4,
      "gmsl_mm": -68.8,
      "uncertainty_mm": 7.9
    },
    {
      "year": 1950,
      "month": 5,
      "gmsl_mm": -68.3,
      "uncertainty_mm": 7.9
    },
    {
      "year": 1950,
      "month": 6,
      "gmsl_mm": -67.9,
      "uncertainty_mm": 7.9
    },
    {
      "year": 1950,
      "month": 7,
      "gmsl_mm": -68.5,
      "uncertainty_mm": 7.9
    },
    {
      "year": 1950,
      "month": 8,
      "gmsl_mm": -69.2,
      "uncertainty_mm": 7.9
    },
    {
      "year": 1950,
      "month": 9,
      "gmsl_mm": -67.5,
      "uncertainty_mm": 7.9
    },
    {
      "year": 1950,
      "month": 10,
      "gmsl_mm": -64.7,
      "uncertainty_mm": 7.9
    },
    {
      "year": 1950,
      "month": 11,
      "gmsl_mm": -61.9,
      "uncertainty_mm": 7.9
    },
    {
      "year": 1950,
      "month": 12,
      "gmsl_mm": -59.5,
      "uncertainty_mm": 7.9
    },
    {
      "year": 1951,
      "month": 1,
      "gmsl_mm": -60.9,
      "uncertainty_mm": 7.8
    },
    {
      "year": 1951,
      "month": 2,
      "gmsl_mm": -56.9,
      "uncertainty_mm": 7.8
    },
    {
      "year": 1951,
      "month": 3,
      "gmsl_mm": -51.6,
      "uncertainty_mm": 7.8
    },
    {
      "year": 1951,
      "month": 4,
      "gmsl_mm": -51,
      "uncertainty_mm": 7.8
    },
    {
      "year": 1951,
      "month": 5,
      "gmsl_mm": -50.7,
      "uncertainty_mm": 7.7
    },
    {
      "year": 1951,
      "month": 6,
      "gmsl_mm": -55.8,
      "uncertainty_mm": 7.7
    },
    {
      "year": 1951,
      "month": 7,
      "gmsl_mm": -59.4,
      "uncertainty_mm": 7.7
    },
    {
      "year": 1951,
      "month": 8,
      "gmsl_mm": -63,
      "uncertainty_mm": 7.7
    },
    {
      "year": 1951,
      "month": 9,
      "gmsl_mm": -61.7,
      "uncertainty_mm": 7.7
    },
    {
      "year": 1951,
      "month": 10,
      "gmsl_mm": -61.6,
      "uncertainty_mm": 7.7
    },
    {
      "year": 1951,
      "month": 11,
      "gmsl_mm": -59.8,
      "uncertainty_mm": 7.7
    },
    {
      "year": 1951,
      "month": 12,
      "gmsl_mm": -61.6,
      "uncertainty_mm": 7.7
    },
    {
      "year": 1952,
      "month": 1,
      "gmsl_mm": -62.2,
      "uncertainty_mm": 7.7
    },
    {
      "year": 1952,
      "month": 2,
      "gmsl_mm": -62.7,
      "uncertainty_mm": 7.7
    },
    {
      "year": 1952,
      "month": 3,
      "gmsl_mm": -64.4,
      "uncertainty_mm": 7.7
    },
    {
      "year": 1952,
      "month": 4,
      "gmsl_mm": -64.2,
      "uncertainty_mm": 7.7
    },
    {
      "year": 1952,
      "month": 5,
      "gmsl_mm": -63.6,
      "uncertainty_mm": 7.7
    },
    {
      "year": 1952,
      "month": 6,
      "gmsl_mm": -61.1,
      "uncertainty_mm": 7.7
    },
    {
      "year": 1952,
      "month": 7,
      "gmsl_mm": -62.2,
      "uncertainty_mm": 7.7
    },
    {
      "year": 1952,
      "month": 8,
      "gmsl_mm": -61.4,
      "uncertainty_mm": 7.7
    },
    {
      "year": 1952,
      "month": 9,
      "gmsl_mm": -59.1,
      "uncertainty_mm": 7.6
    },
    {
      "year": 1952,
      "month": 10,
      "gmsl_mm": -57.8,
      "uncertainty_mm": 7.6
    },
    {
      "year": 1952,
      "month": 11,
      "gmsl_mm": -53.2,
      "uncertainty_mm": 7.6
    },
    {
      "year": 1952,
      "month": 12,
      "gmsl_mm": -52.7,
      "uncertainty_mm": 7.6
    },
    {
      "year": 1953,
      "month": 1,
      "gmsl_mm": -53.1,
      "uncertainty_mm": 7.5
    },
    {
      "year": 1953,
      "month": 2,
      "gmsl_mm": -56,
      "uncertainty_mm": 7.5
    },
    {
      "year": 1953,
      "month": 3,
      "gmsl_mm": -57.8,
      "uncertainty_mm": 7.5
    },
    {
      "year": 1953,
      "month": 4,
      "gmsl_mm": -55.8,
      "uncertainty_mm": 7.5
    },
    {
      "year": 1953,
      "month": 5,
      "gmsl_mm": -52.5,
      "uncertainty_mm": 7.5
    },
    {
      "year": 1953,
      "month": 6,
      "gmsl_mm": -49.9,
      "uncertainty_mm": 7.4
    },
    {
      "year": 1953,
      "month": 7,
      "gmsl_mm": -52.4,
      "uncertainty_mm": 7.5
    },
    {
      "year": 1953,
      "month": 8,
      "gmsl_mm": -55,
      "uncertainty_mm": 7.5
    },
    {
      "year": 1953,
      "month": 9,
      "gmsl_mm": -57.6,
      "uncertainty_mm": 7.4
    },
    {
      "year": 1953,
      "month": 10,
      "gmsl_mm": -59.8,
      "uncertainty_mm": 7.4
    },
    {
      "year": 1953,
      "month": 11,
      "gmsl_mm": -60.5,
      "uncertainty_mm": 7.4
    },
    {
      "year": 1953,
      "month": 12,
      "gmsl_mm": -61.2,
      "uncertainty_mm": 7.4
    },
    {
      "year": 1954,
      "month": 1,
      "gmsl_mm": -59,
      "uncertainty_mm": 7.4
    },
    {
      "year": 1954,
      "month": 2,
      "gmsl_mm": -57.6,
      "uncertainty_mm": 7.4
    },
    {
      "year": 1954,
      "month": 3,
      "gmsl_mm": -56.9,
      "uncertainty_mm": 7.4
    },
    {
      "year": 1954,
      "month": 4,
      "gmsl_mm": -59.2,
      "uncertainty_mm": 7.3
    },
    {
      "year": 1954,
      "month": 5,
      "gmsl_mm": -58.9,
      "uncertainty_mm": 7.3
    },
    {
      "year": 1954,
      "month": 6,
      "gmsl_mm": -61.8,
      "uncertainty_mm": 7.3
    },
    {
      "year": 1954,
      "month": 7,
      "gmsl_mm": -64.4,
      "uncertainty_mm": 7.3
    },
    {
      "year": 1954,
      "month": 8,
      "gmsl_mm": -65.2,
      "uncertainty_mm": 7.3
    },
    {
      "year": 1954,
      "month": 9,
      "gmsl_mm": -62.9,
      "uncertainty_mm": 7.3
    },
    {
      "year": 1954,
      "month": 10,
      "gmsl_mm": -58,
      "uncertainty_mm": 7.3
    },
    {
      "year": 1954,
      "month": 11,
      "gmsl_mm": -52.8,
      "uncertainty_mm": 7.3
    },
    {
      "year": 1954,
      "month": 12,
      "gmsl_mm": -50.5,
      "uncertainty_mm": 7.3
    },
    {
      "year": 1955,
      "month": 1,
      "gmsl_mm": -48.8,
      "uncertainty_mm": 7.2
    },
    {
      "year": 1955,
      "month": 2,
      "gmsl_mm": -49.1,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1955,
      "month": 3,
      "gmsl_mm": -52.4,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1955,
      "month": 4,
      "gmsl_mm": -56.5,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1955,
      "month": 5,
      "gmsl_mm": -61.2,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1955,
      "month": 6,
      "gmsl_mm": -64.2,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1955,
      "month": 7,
      "gmsl_mm": -66.3,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1955,
      "month": 8,
      "gmsl_mm": -63.1,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1955,
      "month": 9,
      "gmsl_mm": -62,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1955,
      "month": 10,
      "gmsl_mm": -57.5,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1955,
      "month": 11,
      "gmsl_mm": -57,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1955,
      "month": 12,
      "gmsl_mm": -57.6,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1956,
      "month": 1,
      "gmsl_mm": -58.6,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1956,
      "month": 2,
      "gmsl_mm": -62.2,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1956,
      "month": 3,
      "gmsl_mm": -61.4,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1956,
      "month": 4,
      "gmsl_mm": -58.5,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1956,
      "month": 5,
      "gmsl_mm": -58.5,
      "uncertainty_mm": 7
    },
    {
      "year": 1956,
      "month": 6,
      "gmsl_mm": -60,
      "uncertainty_mm": 7
    },
    {
      "year": 1956,
      "month": 7,
      "gmsl_mm": -64.9,
      "uncertainty_mm": 7
    },
    {
      "year": 1956,
      "month": 8,
      "gmsl_mm": -66.1,
      "uncertainty_mm": 7
    },
    {
      "year": 1956,
      "month": 9,
      "gmsl_mm": -66.8,
      "uncertainty_mm": 7
    },
    {
      "year": 1956,
      "month": 10,
      "gmsl_mm": -67.2,
      "uncertainty_mm": 7
    },
    {
      "year": 1956,
      "month": 11,
      "gmsl_mm": -67.3,
      "uncertainty_mm": 7
    },
    {
      "year": 1956,
      "month": 12,
      "gmsl_mm": -65.9,
      "uncertainty_mm": 7.2
    },
    {
      "year": 1957,
      "month": 1,
      "gmsl_mm": -61.3,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1957,
      "month": 2,
      "gmsl_mm": -53.1,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1957,
      "month": 3,
      "gmsl_mm": -48.9,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1957,
      "month": 4,
      "gmsl_mm": -47.2,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1957,
      "month": 5,
      "gmsl_mm": -45.5,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1957,
      "month": 6,
      "gmsl_mm": -45.4,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1957,
      "month": 7,
      "gmsl_mm": -45.7,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1957,
      "month": 8,
      "gmsl_mm": -48.8,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1957,
      "month": 9,
      "gmsl_mm": -49.6,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1957,
      "month": 10,
      "gmsl_mm": -50.7,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1957,
      "month": 11,
      "gmsl_mm": -49.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1957,
      "month": 12,
      "gmsl_mm": -50.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1958,
      "month": 1,
      "gmsl_mm": -48.5,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1958,
      "month": 2,
      "gmsl_mm": -49,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1958,
      "month": 3,
      "gmsl_mm": -48.9,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1958,
      "month": 4,
      "gmsl_mm": -51.4,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1958,
      "month": 5,
      "gmsl_mm": -50.9,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1958,
      "month": 6,
      "gmsl_mm": -51,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1958,
      "month": 7,
      "gmsl_mm": -49.8,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1958,
      "month": 8,
      "gmsl_mm": -49.2,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1958,
      "month": 9,
      "gmsl_mm": -47.9,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1958,
      "month": 10,
      "gmsl_mm": -45.6,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1958,
      "month": 11,
      "gmsl_mm": -44.2,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1958,
      "month": 12,
      "gmsl_mm": -43.3,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1959,
      "month": 1,
      "gmsl_mm": -45.4,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1959,
      "month": 2,
      "gmsl_mm": -48.7,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1959,
      "month": 3,
      "gmsl_mm": -50.8,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1959,
      "month": 4,
      "gmsl_mm": -50.1,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1959,
      "month": 5,
      "gmsl_mm": -49.7,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1959,
      "month": 6,
      "gmsl_mm": -48.3,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1959,
      "month": 7,
      "gmsl_mm": -48,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1959,
      "month": 8,
      "gmsl_mm": -45.6,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1959,
      "month": 9,
      "gmsl_mm": -46.6,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1959,
      "month": 10,
      "gmsl_mm": -45,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1959,
      "month": 11,
      "gmsl_mm": -49.4,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1959,
      "month": 12,
      "gmsl_mm": -48.6,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1960,
      "month": 1,
      "gmsl_mm": -48.9,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1960,
      "month": 2,
      "gmsl_mm": -44.9,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1960,
      "month": 3,
      "gmsl_mm": -45.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1960,
      "month": 4,
      "gmsl_mm": -43.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1960,
      "month": 5,
      "gmsl_mm": -42.5,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1960,
      "month": 6,
      "gmsl_mm": -42.9,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1960,
      "month": 7,
      "gmsl_mm": -44.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1960,
      "month": 8,
      "gmsl_mm": -44.9,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1960,
      "month": 9,
      "gmsl_mm": -45.4,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1960,
      "month": 10,
      "gmsl_mm": -44.7,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1960,
      "month": 11,
      "gmsl_mm": -43.9,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1960,
      "month": 12,
      "gmsl_mm": -40.8,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1961,
      "month": 1,
      "gmsl_mm": -38,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1961,
      "month": 2,
      "gmsl_mm": -33.2,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1961,
      "month": 3,
      "gmsl_mm": -32.8,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1961,
      "month": 4,
      "gmsl_mm": -32.4,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1961,
      "month": 5,
      "gmsl_mm": -34.8,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1961,
      "month": 6,
      "gmsl_mm": -36.9,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1961,
      "month": 7,
      "gmsl_mm": -37.8,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1961,
      "month": 8,
      "gmsl_mm": -38.8,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1961,
      "month": 9,
      "gmsl_mm": -40,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1961,
      "month": 10,
      "gmsl_mm": -43.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1961,
      "month": 11,
      "gmsl_mm": -45.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1961,
      "month": 12,
      "gmsl_mm": -44.2,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1962,
      "month": 1,
      "gmsl_mm": -44.3,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1962,
      "month": 2,
      "gmsl_mm": -42.8,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1962,
      "month": 3,
      "gmsl_mm": -44.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1962,
      "month": 4,
      "gmsl_mm": -44.6,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1962,
      "month": 5,
      "gmsl_mm": -45.4,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1962,
      "month": 6,
      "gmsl_mm": -45.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1962,
      "month": 7,
      "gmsl_mm": -46.6,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1962,
      "month": 8,
      "gmsl_mm": -43.7,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1962,
      "month": 9,
      "gmsl_mm": -42.3,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1962,
      "month": 10,
      "gmsl_mm": -39.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1962,
      "month": 11,
      "gmsl_mm": -40.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1962,
      "month": 12,
      "gmsl_mm": -41.7,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1963,
      "month": 1,
      "gmsl_mm": -40.5,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1963,
      "month": 2,
      "gmsl_mm": -40.7,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1963,
      "month": 3,
      "gmsl_mm": -40.8,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1963,
      "month": 4,
      "gmsl_mm": -42.8,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1963,
      "month": 5,
      "gmsl_mm": -44.2,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1963,
      "month": 6,
      "gmsl_mm": -45.7,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1963,
      "month": 7,
      "gmsl_mm": -47,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1963,
      "month": 8,
      "gmsl_mm": -48.3,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1963,
      "month": 9,
      "gmsl_mm": -45.9,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1963,
      "month": 10,
      "gmsl_mm": -47.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1963,
      "month": 11,
      "gmsl_mm": -45.3,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1963,
      "month": 12,
      "gmsl_mm": -50.8,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1964,
      "month": 1,
      "gmsl_mm": -55,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1964,
      "month": 2,
      "gmsl_mm": -59.3,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1964,
      "month": 3,
      "gmsl_mm": -60.2,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1964,
      "month": 4,
      "gmsl_mm": -60.7,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1964,
      "month": 5,
      "gmsl_mm": -56.2,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1964,
      "month": 6,
      "gmsl_mm": -50.8,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1964,
      "month": 7,
      "gmsl_mm": -46.8,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1964,
      "month": 8,
      "gmsl_mm": -46.6,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1964,
      "month": 9,
      "gmsl_mm": -48.5,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1964,
      "month": 10,
      "gmsl_mm": -51.3,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1964,
      "month": 11,
      "gmsl_mm": -50.8,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1964,
      "month": 12,
      "gmsl_mm": -47.7,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1965,
      "month": 1,
      "gmsl_mm": -43.3,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1965,
      "month": 2,
      "gmsl_mm": -38.8,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1965,
      "month": 3,
      "gmsl_mm": -40.8,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1965,
      "month": 4,
      "gmsl_mm": -44,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1965,
      "month": 5,
      "gmsl_mm": -47.6,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1965,
      "month": 6,
      "gmsl_mm": -46.7,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1965,
      "month": 7,
      "gmsl_mm": -43.5,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1965,
      "month": 8,
      "gmsl_mm": -40,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1965,
      "month": 9,
      "gmsl_mm": -36.6,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1965,
      "month": 10,
      "gmsl_mm": -38.2,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1965,
      "month": 11,
      "gmsl_mm": -38.7,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1965,
      "month": 12,
      "gmsl_mm": -40.3,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1966,
      "month": 1,
      "gmsl_mm": -40.9,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1966,
      "month": 2,
      "gmsl_mm": -42.9,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1966,
      "month": 3,
      "gmsl_mm": -45.4,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1966,
      "month": 4,
      "gmsl_mm": -47.5,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1966,
      "month": 5,
      "gmsl_mm": -48.6,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1966,
      "month": 6,
      "gmsl_mm": -48.9,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1966,
      "month": 7,
      "gmsl_mm": -47.1,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1966,
      "month": 8,
      "gmsl_mm": -46.7,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1966,
      "month": 9,
      "gmsl_mm": -46.7,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1966,
      "month": 10,
      "gmsl_mm": -48.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1966,
      "month": 11,
      "gmsl_mm": -51.5,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1966,
      "month": 12,
      "gmsl_mm": -49.3,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1967,
      "month": 1,
      "gmsl_mm": -50.5,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1967,
      "month": 2,
      "gmsl_mm": -50.2,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1967,
      "month": 3,
      "gmsl_mm": -52.5,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1967,
      "month": 4,
      "gmsl_mm": -50.9,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1967,
      "month": 5,
      "gmsl_mm": -49.4,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1967,
      "month": 6,
      "gmsl_mm": -44.6,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1967,
      "month": 7,
      "gmsl_mm": -44,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1967,
      "month": 8,
      "gmsl_mm": -42,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1967,
      "month": 9,
      "gmsl_mm": -41.7,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1967,
      "month": 10,
      "gmsl_mm": -41,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1967,
      "month": 11,
      "gmsl_mm": -40.4,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1967,
      "month": 12,
      "gmsl_mm": -40.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1968,
      "month": 1,
      "gmsl_mm": -39.6,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1968,
      "month": 2,
      "gmsl_mm": -42,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1968,
      "month": 3,
      "gmsl_mm": -48,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1968,
      "month": 4,
      "gmsl_mm": -53,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1968,
      "month": 5,
      "gmsl_mm": -56.7,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1968,
      "month": 6,
      "gmsl_mm": -55.3,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1968,
      "month": 7,
      "gmsl_mm": -50.9,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1968,
      "month": 8,
      "gmsl_mm": -43.5,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1968,
      "month": 9,
      "gmsl_mm": -39.6,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1968,
      "month": 10,
      "gmsl_mm": -36,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1968,
      "month": 11,
      "gmsl_mm": -35.7,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1968,
      "month": 12,
      "gmsl_mm": -37.4,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1969,
      "month": 1,
      "gmsl_mm": -35.8,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1969,
      "month": 2,
      "gmsl_mm": -37.2,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1969,
      "month": 3,
      "gmsl_mm": -36.2,
      "uncertainty_mm": 7
    },
    {
      "year": 1969,
      "month": 4,
      "gmsl_mm": -37.4,
      "uncertainty_mm": 7
    },
    {
      "year": 1969,
      "month": 5,
      "gmsl_mm": -38.6,
      "uncertainty_mm": 7
    },
    {
      "year": 1969,
      "month": 6,
      "gmsl_mm": -39.1,
      "uncertainty_mm": 7
    },
    {
      "year": 1969,
      "month": 7,
      "gmsl_mm": -41.1,
      "uncertainty_mm": 7
    },
    {
      "year": 1969,
      "month": 8,
      "gmsl_mm": -38.9,
      "uncertainty_mm": 7
    },
    {
      "year": 1969,
      "month": 9,
      "gmsl_mm": -37.9,
      "uncertainty_mm": 7
    },
    {
      "year": 1969,
      "month": 10,
      "gmsl_mm": -36.5,
      "uncertainty_mm": 7
    },
    {
      "year": 1969,
      "month": 11,
      "gmsl_mm": -37.9,
      "uncertainty_mm": 7
    },
    {
      "year": 1969,
      "month": 12,
      "gmsl_mm": -39.4,
      "uncertainty_mm": 7
    },
    {
      "year": 1970,
      "month": 1,
      "gmsl_mm": -38.8,
      "uncertainty_mm": 7
    },
    {
      "year": 1970,
      "month": 2,
      "gmsl_mm": -37.6,
      "uncertainty_mm": 7
    },
    {
      "year": 1970,
      "month": 3,
      "gmsl_mm": -38.2,
      "uncertainty_mm": 7
    },
    {
      "year": 1970,
      "month": 4,
      "gmsl_mm": -41.1,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1970,
      "month": 5,
      "gmsl_mm": -41.3,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1970,
      "month": 6,
      "gmsl_mm": -41,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1970,
      "month": 7,
      "gmsl_mm": -42.6,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1970,
      "month": 8,
      "gmsl_mm": -41.9,
      "uncertainty_mm": 7
    },
    {
      "year": 1970,
      "month": 9,
      "gmsl_mm": -42.4,
      "uncertainty_mm": 7
    },
    {
      "year": 1970,
      "month": 10,
      "gmsl_mm": -38.7,
      "uncertainty_mm": 7
    },
    {
      "year": 1970,
      "month": 11,
      "gmsl_mm": -38.6,
      "uncertainty_mm": 7
    },
    {
      "year": 1970,
      "month": 12,
      "gmsl_mm": -37.1,
      "uncertainty_mm": 7
    },
    {
      "year": 1971,
      "month": 1,
      "gmsl_mm": -34.9,
      "uncertainty_mm": 7
    },
    {
      "year": 1971,
      "month": 2,
      "gmsl_mm": -31.7,
      "uncertainty_mm": 7
    },
    {
      "year": 1971,
      "month": 3,
      "gmsl_mm": -30.7,
      "uncertainty_mm": 7
    },
    {
      "year": 1971,
      "month": 4,
      "gmsl_mm": -31.4,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1971,
      "month": 5,
      "gmsl_mm": -35.2,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1971,
      "month": 6,
      "gmsl_mm": -37.7,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1971,
      "month": 7,
      "gmsl_mm": -38.5,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1971,
      "month": 8,
      "gmsl_mm": -36.5,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1971,
      "month": 9,
      "gmsl_mm": -33.1,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1971,
      "month": 10,
      "gmsl_mm": -33.5,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1971,
      "month": 11,
      "gmsl_mm": -35.9,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1971,
      "month": 12,
      "gmsl_mm": -37.6,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1972,
      "month": 1,
      "gmsl_mm": -34,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1972,
      "month": 2,
      "gmsl_mm": -29.2,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1972,
      "month": 3,
      "gmsl_mm": -25.3,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1972,
      "month": 4,
      "gmsl_mm": -24.6,
      "uncertainty_mm": 7.1
    },
    {
      "year": 1972,
      "month": 5,
      "gmsl_mm": -22.6,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1972,
      "month": 6,
      "gmsl_mm": -20.2,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1972,
      "month": 7,
      "gmsl_mm": -19.1,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1972,
      "month": 8,
      "gmsl_mm": -23.1,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1972,
      "month": 9,
      "gmsl_mm": -25.7,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1972,
      "month": 10,
      "gmsl_mm": -27.9,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1972,
      "month": 11,
      "gmsl_mm": -26.9,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1972,
      "month": 12,
      "gmsl_mm": -28.5,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1973,
      "month": 1,
      "gmsl_mm": -33.2,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1973,
      "month": 2,
      "gmsl_mm": -33.6,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1973,
      "month": 3,
      "gmsl_mm": -34.6,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1973,
      "month": 4,
      "gmsl_mm": -31.7,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1973,
      "month": 5,
      "gmsl_mm": -33.8,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1973,
      "month": 6,
      "gmsl_mm": -32.7,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1973,
      "month": 7,
      "gmsl_mm": -34.4,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1973,
      "month": 8,
      "gmsl_mm": -34.4,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1973,
      "month": 9,
      "gmsl_mm": -34.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1973,
      "month": 10,
      "gmsl_mm": -31.6,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1973,
      "month": 11,
      "gmsl_mm": -24.7,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1973,
      "month": 12,
      "gmsl_mm": -19.9,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1974,
      "month": 1,
      "gmsl_mm": -15.4,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1974,
      "month": 2,
      "gmsl_mm": -16.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1974,
      "month": 3,
      "gmsl_mm": -17.6,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1974,
      "month": 4,
      "gmsl_mm": -17.4,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1974,
      "month": 5,
      "gmsl_mm": -17.7,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1974,
      "month": 6,
      "gmsl_mm": -18.3,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1974,
      "month": 7,
      "gmsl_mm": -20.4,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1974,
      "month": 8,
      "gmsl_mm": -22.1,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1974,
      "month": 9,
      "gmsl_mm": -23,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1974,
      "month": 10,
      "gmsl_mm": -23.8,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1974,
      "month": 11,
      "gmsl_mm": -22.6,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1974,
      "month": 12,
      "gmsl_mm": -21.8,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1975,
      "month": 1,
      "gmsl_mm": -21.1,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1975,
      "month": 2,
      "gmsl_mm": -20.2,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1975,
      "month": 3,
      "gmsl_mm": -18.7,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1975,
      "month": 4,
      "gmsl_mm": -20,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1975,
      "month": 5,
      "gmsl_mm": -21.3,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1975,
      "month": 6,
      "gmsl_mm": -23.4,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1975,
      "month": 7,
      "gmsl_mm": -23.4,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1975,
      "month": 8,
      "gmsl_mm": -22,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1975,
      "month": 9,
      "gmsl_mm": -21.3,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1975,
      "month": 10,
      "gmsl_mm": -20.7,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1975,
      "month": 11,
      "gmsl_mm": -20.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1975,
      "month": 12,
      "gmsl_mm": -22.7,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1976,
      "month": 1,
      "gmsl_mm": -22.9,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1976,
      "month": 2,
      "gmsl_mm": -25.7,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1976,
      "month": 3,
      "gmsl_mm": -24.4,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1976,
      "month": 4,
      "gmsl_mm": -23.2,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1976,
      "month": 5,
      "gmsl_mm": -22.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1976,
      "month": 6,
      "gmsl_mm": -20.4,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1976,
      "month": 7,
      "gmsl_mm": -21.6,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1976,
      "month": 8,
      "gmsl_mm": -23.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1976,
      "month": 9,
      "gmsl_mm": -22.2,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1976,
      "month": 10,
      "gmsl_mm": -22.6,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1976,
      "month": 11,
      "gmsl_mm": -19.7,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1976,
      "month": 12,
      "gmsl_mm": -19.5,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1977,
      "month": 1,
      "gmsl_mm": -20.9,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1977,
      "month": 2,
      "gmsl_mm": -23.6,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1977,
      "month": 3,
      "gmsl_mm": -25.4,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1977,
      "month": 4,
      "gmsl_mm": -27.6,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1977,
      "month": 5,
      "gmsl_mm": -27.1,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1977,
      "month": 6,
      "gmsl_mm": -26.5,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1977,
      "month": 7,
      "gmsl_mm": -25.5,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1977,
      "month": 8,
      "gmsl_mm": -24.8,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1977,
      "month": 9,
      "gmsl_mm": -23.8,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1977,
      "month": 10,
      "gmsl_mm": -23.1,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1977,
      "month": 11,
      "gmsl_mm": -21,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1977,
      "month": 12,
      "gmsl_mm": -18.3,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1978,
      "month": 1,
      "gmsl_mm": -15.7,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1978,
      "month": 2,
      "gmsl_mm": -12,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1978,
      "month": 3,
      "gmsl_mm": -13,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1978,
      "month": 4,
      "gmsl_mm": -13.3,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1978,
      "month": 5,
      "gmsl_mm": -17,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1978,
      "month": 6,
      "gmsl_mm": -18.5,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1978,
      "month": 7,
      "gmsl_mm": -19.9,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1978,
      "month": 8,
      "gmsl_mm": -18.3,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1978,
      "month": 9,
      "gmsl_mm": -18,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1978,
      "month": 10,
      "gmsl_mm": -17.7,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1978,
      "month": 11,
      "gmsl_mm": -22.2,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1978,
      "month": 12,
      "gmsl_mm": -25.2,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1979,
      "month": 1,
      "gmsl_mm": -28,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1979,
      "month": 2,
      "gmsl_mm": -26.9,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1979,
      "month": 3,
      "gmsl_mm": -25.8,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1979,
      "month": 4,
      "gmsl_mm": -26.1,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1979,
      "month": 5,
      "gmsl_mm": -27.5,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1979,
      "month": 6,
      "gmsl_mm": -27.1,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1979,
      "month": 7,
      "gmsl_mm": -24.7,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1979,
      "month": 8,
      "gmsl_mm": -19.9,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1979,
      "month": 9,
      "gmsl_mm": -17.3,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1979,
      "month": 10,
      "gmsl_mm": -14.9,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1979,
      "month": 11,
      "gmsl_mm": -17.2,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1979,
      "month": 12,
      "gmsl_mm": -15,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1980,
      "month": 1,
      "gmsl_mm": -15.2,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1980,
      "month": 2,
      "gmsl_mm": -14.1,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1980,
      "month": 3,
      "gmsl_mm": -16.1,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1980,
      "month": 4,
      "gmsl_mm": -15.8,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1980,
      "month": 5,
      "gmsl_mm": -16.1,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1980,
      "month": 6,
      "gmsl_mm": -16.7,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1980,
      "month": 7,
      "gmsl_mm": -19.2,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1980,
      "month": 8,
      "gmsl_mm": -21,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1980,
      "month": 9,
      "gmsl_mm": -21,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1980,
      "month": 10,
      "gmsl_mm": -19.2,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1980,
      "month": 11,
      "gmsl_mm": -14,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1980,
      "month": 12,
      "gmsl_mm": -9.9,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1981,
      "month": 1,
      "gmsl_mm": -7.8,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1981,
      "month": 2,
      "gmsl_mm": -6.8,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1981,
      "month": 3,
      "gmsl_mm": -5,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1981,
      "month": 4,
      "gmsl_mm": -4,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1981,
      "month": 5,
      "gmsl_mm": -2.7,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1981,
      "month": 6,
      "gmsl_mm": -2.2,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1981,
      "month": 7,
      "gmsl_mm": -3.9,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1981,
      "month": 8,
      "gmsl_mm": -3.1,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1981,
      "month": 9,
      "gmsl_mm": -4.1,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1981,
      "month": 10,
      "gmsl_mm": -2,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1981,
      "month": 11,
      "gmsl_mm": -2.9,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1981,
      "month": 12,
      "gmsl_mm": -4.4,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1982,
      "month": 1,
      "gmsl_mm": -8.2,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1982,
      "month": 2,
      "gmsl_mm": -9.3,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1982,
      "month": 3,
      "gmsl_mm": -10.6,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1982,
      "month": 4,
      "gmsl_mm": -13.1,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1982,
      "month": 5,
      "gmsl_mm": -13.5,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1982,
      "month": 6,
      "gmsl_mm": -14.7,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1982,
      "month": 7,
      "gmsl_mm": -15.8,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1982,
      "month": 8,
      "gmsl_mm": -14.4,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1982,
      "month": 9,
      "gmsl_mm": -10.3,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1982,
      "month": 10,
      "gmsl_mm": -4.7,
      "uncertainty_mm": 6.2
    },
    {
      "year": 1982,
      "month": 11,
      "gmsl_mm": -2.1,
      "uncertainty_mm": 6.2
    },
    {
      "year": 1982,
      "month": 12,
      "gmsl_mm": -1.6,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1983,
      "month": 1,
      "gmsl_mm": 0.2,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1983,
      "month": 2,
      "gmsl_mm": -0.5,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1983,
      "month": 3,
      "gmsl_mm": 1.1,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1983,
      "month": 4,
      "gmsl_mm": 4.3,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1983,
      "month": 5,
      "gmsl_mm": 7.5,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1983,
      "month": 6,
      "gmsl_mm": 6,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1983,
      "month": 7,
      "gmsl_mm": 1.8,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1983,
      "month": 8,
      "gmsl_mm": -5.9,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1983,
      "month": 9,
      "gmsl_mm": -6.7,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1983,
      "month": 10,
      "gmsl_mm": -9.7,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1983,
      "month": 11,
      "gmsl_mm": -6.8,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1983,
      "month": 12,
      "gmsl_mm": -8.9,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1984,
      "month": 1,
      "gmsl_mm": -7.5,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1984,
      "month": 2,
      "gmsl_mm": -6.3,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1984,
      "month": 3,
      "gmsl_mm": -3,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1984,
      "month": 4,
      "gmsl_mm": -2.2,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1984,
      "month": 5,
      "gmsl_mm": -1.2,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1984,
      "month": 6,
      "gmsl_mm": 1,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1984,
      "month": 7,
      "gmsl_mm": 0.6,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1984,
      "month": 8,
      "gmsl_mm": 2,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1984,
      "month": 9,
      "gmsl_mm": -0.2,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1984,
      "month": 10,
      "gmsl_mm": -1.1,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1984,
      "month": 11,
      "gmsl_mm": -4.4,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1984,
      "month": 12,
      "gmsl_mm": -6.4,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1985,
      "month": 1,
      "gmsl_mm": -10.4,
      "uncertainty_mm": 6.2
    },
    {
      "year": 1985,
      "month": 2,
      "gmsl_mm": -9.5,
      "uncertainty_mm": 6.2
    },
    {
      "year": 1985,
      "month": 3,
      "gmsl_mm": -11.7,
      "uncertainty_mm": 6.2
    },
    {
      "year": 1985,
      "month": 4,
      "gmsl_mm": -11.7,
      "uncertainty_mm": 6.2
    },
    {
      "year": 1985,
      "month": 5,
      "gmsl_mm": -13.5,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1985,
      "month": 6,
      "gmsl_mm": -13.1,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1985,
      "month": 7,
      "gmsl_mm": -13.7,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1985,
      "month": 8,
      "gmsl_mm": -15.4,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1985,
      "month": 9,
      "gmsl_mm": -14.6,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1985,
      "month": 10,
      "gmsl_mm": -13.9,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1985,
      "month": 11,
      "gmsl_mm": -12.5,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1985,
      "month": 12,
      "gmsl_mm": -12.2,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1986,
      "month": 1,
      "gmsl_mm": -10.8,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1986,
      "month": 2,
      "gmsl_mm": -9.7,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1986,
      "month": 3,
      "gmsl_mm": -10.3,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1986,
      "month": 4,
      "gmsl_mm": -10.5,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1986,
      "month": 5,
      "gmsl_mm": -11.8,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1986,
      "month": 6,
      "gmsl_mm": -11,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1986,
      "month": 7,
      "gmsl_mm": -13.3,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1986,
      "month": 8,
      "gmsl_mm": -12.5,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1986,
      "month": 9,
      "gmsl_mm": -13.5,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1986,
      "month": 10,
      "gmsl_mm": -13.9,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1986,
      "month": 11,
      "gmsl_mm": -14.3,
      "uncertainty_mm": 6.2
    },
    {
      "year": 1986,
      "month": 12,
      "gmsl_mm": -13.1,
      "uncertainty_mm": 6.2
    },
    {
      "year": 1987,
      "month": 1,
      "gmsl_mm": -11.2,
      "uncertainty_mm": 6.2
    },
    {
      "year": 1987,
      "month": 2,
      "gmsl_mm": -8.5,
      "uncertainty_mm": 6.2
    },
    {
      "year": 1987,
      "month": 3,
      "gmsl_mm": -10.8,
      "uncertainty_mm": 6.2
    },
    {
      "year": 1987,
      "month": 4,
      "gmsl_mm": -12.4,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1987,
      "month": 5,
      "gmsl_mm": -10.9,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1987,
      "month": 6,
      "gmsl_mm": -9.3,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1987,
      "month": 7,
      "gmsl_mm": -8.2,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1987,
      "month": 8,
      "gmsl_mm": -13.5,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1987,
      "month": 9,
      "gmsl_mm": -15.3,
      "uncertainty_mm": 6.2
    },
    {
      "year": 1987,
      "month": 10,
      "gmsl_mm": -16.7,
      "uncertainty_mm": 6.2
    },
    {
      "year": 1987,
      "month": 11,
      "gmsl_mm": -12.1,
      "uncertainty_mm": 6.2
    },
    {
      "year": 1987,
      "month": 12,
      "gmsl_mm": -8.6,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1988,
      "month": 1,
      "gmsl_mm": -9.1,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1988,
      "month": 2,
      "gmsl_mm": -7.8,
      "uncertainty_mm": 6.2
    },
    {
      "year": 1988,
      "month": 3,
      "gmsl_mm": -9.9,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1988,
      "month": 4,
      "gmsl_mm": -8.2,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1988,
      "month": 5,
      "gmsl_mm": -8.1,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1988,
      "month": 6,
      "gmsl_mm": -6.6,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1988,
      "month": 7,
      "gmsl_mm": -6.4,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1988,
      "month": 8,
      "gmsl_mm": -4.8,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1988,
      "month": 9,
      "gmsl_mm": -3.3,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1988,
      "month": 10,
      "gmsl_mm": -2.6,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1988,
      "month": 11,
      "gmsl_mm": -4.9,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1988,
      "month": 12,
      "gmsl_mm": -9.4,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1989,
      "month": 1,
      "gmsl_mm": -9.4,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1989,
      "month": 2,
      "gmsl_mm": -8,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1989,
      "month": 3,
      "gmsl_mm": -2.4,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1989,
      "month": 4,
      "gmsl_mm": -1.6,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1989,
      "month": 5,
      "gmsl_mm": -1.1,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1989,
      "month": 6,
      "gmsl_mm": -3,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1989,
      "month": 7,
      "gmsl_mm": -2.7,
      "uncertainty_mm": 6.3
    },
    {
      "year": 1989,
      "month": 8,
      "gmsl_mm": -1,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1989,
      "month": 9,
      "gmsl_mm": 0.3,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1989,
      "month": 10,
      "gmsl_mm": 0.6,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1989,
      "month": 11,
      "gmsl_mm": 1.1,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1989,
      "month": 12,
      "gmsl_mm": -0.6,
      "uncertainty_mm": 6.4
    },
    {
      "year": 1990,
      "month": 1,
      "gmsl_mm": -0.2,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1990,
      "month": 2,
      "gmsl_mm": -2.6,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1990,
      "month": 3,
      "gmsl_mm": -4.4,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1990,
      "month": 4,
      "gmsl_mm": -3.9,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1990,
      "month": 5,
      "gmsl_mm": -4.1,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1990,
      "month": 6,
      "gmsl_mm": 0,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1990,
      "month": 7,
      "gmsl_mm": -0.2,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1990,
      "month": 8,
      "gmsl_mm": 2.8,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1990,
      "month": 9,
      "gmsl_mm": 3,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1990,
      "month": 10,
      "gmsl_mm": 3.8,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1990,
      "month": 11,
      "gmsl_mm": 4.3,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1990,
      "month": 12,
      "gmsl_mm": 1.6,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1991,
      "month": 1,
      "gmsl_mm": 3,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1991,
      "month": 2,
      "gmsl_mm": 3.7,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1991,
      "month": 3,
      "gmsl_mm": 5,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1991,
      "month": 4,
      "gmsl_mm": 1.4,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1991,
      "month": 5,
      "gmsl_mm": -1,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1991,
      "month": 6,
      "gmsl_mm": -1.4,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1991,
      "month": 7,
      "gmsl_mm": 1,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1991,
      "month": 8,
      "gmsl_mm": 3.6,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1991,
      "month": 9,
      "gmsl_mm": 3.8,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1991,
      "month": 10,
      "gmsl_mm": 4.1,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1991,
      "month": 11,
      "gmsl_mm": 4,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1991,
      "month": 12,
      "gmsl_mm": 2.9,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1992,
      "month": 1,
      "gmsl_mm": 5,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1992,
      "month": 2,
      "gmsl_mm": 6,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1992,
      "month": 3,
      "gmsl_mm": 4.6,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1992,
      "month": 4,
      "gmsl_mm": 3.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1992,
      "month": 5,
      "gmsl_mm": 0.6,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1992,
      "month": 6,
      "gmsl_mm": 1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1992,
      "month": 7,
      "gmsl_mm": 0.3,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1992,
      "month": 8,
      "gmsl_mm": 0.6,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1992,
      "month": 9,
      "gmsl_mm": 2.2,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1992,
      "month": 10,
      "gmsl_mm": 5.5,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1992,
      "month": 11,
      "gmsl_mm": 5.1,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1992,
      "month": 12,
      "gmsl_mm": 4,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1993,
      "month": 1,
      "gmsl_mm": 2.7,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1993,
      "month": 2,
      "gmsl_mm": 3.8,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1993,
      "month": 3,
      "gmsl_mm": 6.3,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1993,
      "month": 4,
      "gmsl_mm": 8.3,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1993,
      "month": 5,
      "gmsl_mm": 8.6,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1993,
      "month": 6,
      "gmsl_mm": 4.3,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1993,
      "month": 7,
      "gmsl_mm": 0.6,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1993,
      "month": 8,
      "gmsl_mm": -2.4,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1993,
      "month": 9,
      "gmsl_mm": -5.3,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1993,
      "month": 10,
      "gmsl_mm": -4.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1993,
      "month": 11,
      "gmsl_mm": -5.2,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1993,
      "month": 12,
      "gmsl_mm": -0.6,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1994,
      "month": 1,
      "gmsl_mm": 3.4,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1994,
      "month": 2,
      "gmsl_mm": 4,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1994,
      "month": 3,
      "gmsl_mm": 6,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1994,
      "month": 4,
      "gmsl_mm": 5.1,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1994,
      "month": 5,
      "gmsl_mm": 7.4,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1994,
      "month": 6,
      "gmsl_mm": 6.4,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1994,
      "month": 7,
      "gmsl_mm": 9,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1994,
      "month": 8,
      "gmsl_mm": 8.3,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1994,
      "month": 9,
      "gmsl_mm": 8,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1994,
      "month": 10,
      "gmsl_mm": 7.6,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1994,
      "month": 11,
      "gmsl_mm": 5.9,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1994,
      "month": 12,
      "gmsl_mm": 7.8,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1995,
      "month": 1,
      "gmsl_mm": 8.6,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1995,
      "month": 2,
      "gmsl_mm": 9.7,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1995,
      "month": 3,
      "gmsl_mm": 10.4,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1995,
      "month": 4,
      "gmsl_mm": 8.6,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1995,
      "month": 5,
      "gmsl_mm": 7.7,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1995,
      "month": 6,
      "gmsl_mm": 6.6,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1995,
      "month": 7,
      "gmsl_mm": 7.9,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1995,
      "month": 8,
      "gmsl_mm": 7.3,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1995,
      "month": 9,
      "gmsl_mm": 8.6,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1995,
      "month": 10,
      "gmsl_mm": 10.1,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1995,
      "month": 11,
      "gmsl_mm": 12.5,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1995,
      "month": 12,
      "gmsl_mm": 16.3,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1996,
      "month": 1,
      "gmsl_mm": 16.2,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1996,
      "month": 2,
      "gmsl_mm": 16.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1996,
      "month": 3,
      "gmsl_mm": 11.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1996,
      "month": 4,
      "gmsl_mm": 8.4,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1996,
      "month": 5,
      "gmsl_mm": 7.5,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1996,
      "month": 6,
      "gmsl_mm": 7.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1996,
      "month": 7,
      "gmsl_mm": 13,
      "uncertainty_mm": 6.5
    },
    {
      "year": 1996,
      "month": 8,
      "gmsl_mm": 15.6,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1996,
      "month": 9,
      "gmsl_mm": 20.7,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1996,
      "month": 10,
      "gmsl_mm": 18.1,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1996,
      "month": 11,
      "gmsl_mm": 16,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1996,
      "month": 12,
      "gmsl_mm": 14.2,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1997,
      "month": 1,
      "gmsl_mm": 16.5,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1997,
      "month": 2,
      "gmsl_mm": 19.2,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1997,
      "month": 3,
      "gmsl_mm": 22.8,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1997,
      "month": 4,
      "gmsl_mm": 23.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1997,
      "month": 5,
      "gmsl_mm": 22.7,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1997,
      "month": 6,
      "gmsl_mm": 22.2,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1997,
      "month": 7,
      "gmsl_mm": 17.6,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1997,
      "month": 8,
      "gmsl_mm": 17.7,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1997,
      "month": 9,
      "gmsl_mm": 16.9,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1997,
      "month": 10,
      "gmsl_mm": 22.1,
      "uncertainty_mm": 6.6
    },
    {
      "year": 1997,
      "month": 11,
      "gmsl_mm": 22,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1997,
      "month": 12,
      "gmsl_mm": 23.9,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1998,
      "month": 1,
      "gmsl_mm": 20.4,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1998,
      "month": 2,
      "gmsl_mm": 16.4,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1998,
      "month": 3,
      "gmsl_mm": 11.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1998,
      "month": 4,
      "gmsl_mm": 7.1,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1998,
      "month": 5,
      "gmsl_mm": 6.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1998,
      "month": 6,
      "gmsl_mm": 7.2,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1998,
      "month": 7,
      "gmsl_mm": 9.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1998,
      "month": 8,
      "gmsl_mm": 10.1,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1998,
      "month": 9,
      "gmsl_mm": 11.6,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1998,
      "month": 10,
      "gmsl_mm": 9.9,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1998,
      "month": 11,
      "gmsl_mm": 8.9,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1998,
      "month": 12,
      "gmsl_mm": 8.9,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1999,
      "month": 1,
      "gmsl_mm": 12.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1999,
      "month": 2,
      "gmsl_mm": 15.8,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1999,
      "month": 3,
      "gmsl_mm": 20.7,
      "uncertainty_mm": 6.7
    },
    {
      "year": 1999,
      "month": 4,
      "gmsl_mm": 19.9,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1999,
      "month": 5,
      "gmsl_mm": 21.9,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1999,
      "month": 6,
      "gmsl_mm": 21.3,
      "uncertainty_mm": 6.8
    },
    {
      "year": 1999,
      "month": 7,
      "gmsl_mm": 23.2,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1999,
      "month": 8,
      "gmsl_mm": 22.7,
      "uncertainty_mm": 7
    },
    {
      "year": 1999,
      "month": 9,
      "gmsl_mm": 22.2,
      "uncertainty_mm": 7
    },
    {
      "year": 1999,
      "month": 10,
      "gmsl_mm": 20.3,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1999,
      "month": 11,
      "gmsl_mm": 16.2,
      "uncertainty_mm": 6.9
    },
    {
      "year": 1999,
      "month": 12,
      "gmsl_mm": 14,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2000,
      "month": 1,
      "gmsl_mm": 12.8,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2000,
      "month": 2,
      "gmsl_mm": 15.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2000,
      "month": 3,
      "gmsl_mm": 19.4,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2000,
      "month": 4,
      "gmsl_mm": 22.2,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2000,
      "month": 5,
      "gmsl_mm": 26.2,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2000,
      "month": 6,
      "gmsl_mm": 25.9,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2000,
      "month": 7,
      "gmsl_mm": 27.1,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2000,
      "month": 8,
      "gmsl_mm": 22.4,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2000,
      "month": 9,
      "gmsl_mm": 20,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2000,
      "month": 10,
      "gmsl_mm": 16.7,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2000,
      "month": 11,
      "gmsl_mm": 17.8,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2000,
      "month": 12,
      "gmsl_mm": 19.8,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2001,
      "month": 1,
      "gmsl_mm": 23.8,
      "uncertainty_mm": 6.7
    },
    {
      "year": 2001,
      "month": 2,
      "gmsl_mm": 24.2,
      "uncertainty_mm": 6.7
    },
    {
      "year": 2001,
      "month": 3,
      "gmsl_mm": 27,
      "uncertainty_mm": 6.7
    },
    {
      "year": 2001,
      "month": 4,
      "gmsl_mm": 24.8,
      "uncertainty_mm": 6.7
    },
    {
      "year": 2001,
      "month": 5,
      "gmsl_mm": 25.3,
      "uncertainty_mm": 6.7
    },
    {
      "year": 2001,
      "month": 6,
      "gmsl_mm": 25.7,
      "uncertainty_mm": 6.7
    },
    {
      "year": 2001,
      "month": 7,
      "gmsl_mm": 27.1,
      "uncertainty_mm": 6.7
    },
    {
      "year": 2001,
      "month": 8,
      "gmsl_mm": 29.8,
      "uncertainty_mm": 6.7
    },
    {
      "year": 2001,
      "month": 9,
      "gmsl_mm": 29.9,
      "uncertainty_mm": 6.7
    },
    {
      "year": 2001,
      "month": 10,
      "gmsl_mm": 27.6,
      "uncertainty_mm": 6.7
    },
    {
      "year": 2001,
      "month": 11,
      "gmsl_mm": 24.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2001,
      "month": 12,
      "gmsl_mm": 22.1,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2002,
      "month": 1,
      "gmsl_mm": 23.1,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2002,
      "month": 2,
      "gmsl_mm": 24.3,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2002,
      "month": 3,
      "gmsl_mm": 25.9,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2002,
      "month": 4,
      "gmsl_mm": 24.9,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2002,
      "month": 5,
      "gmsl_mm": 26.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2002,
      "month": 6,
      "gmsl_mm": 29.2,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2002,
      "month": 7,
      "gmsl_mm": 29.4,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2002,
      "month": 8,
      "gmsl_mm": 28.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2002,
      "month": 9,
      "gmsl_mm": 30,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2002,
      "month": 10,
      "gmsl_mm": 31.4,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2002,
      "month": 11,
      "gmsl_mm": 34.2,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2002,
      "month": 12,
      "gmsl_mm": 32.9,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2003,
      "month": 1,
      "gmsl_mm": 31.8,
      "uncertainty_mm": 6.7
    },
    {
      "year": 2003,
      "month": 2,
      "gmsl_mm": 30.2,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2003,
      "month": 3,
      "gmsl_mm": 29.3,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2003,
      "month": 4,
      "gmsl_mm": 33.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2003,
      "month": 5,
      "gmsl_mm": 35.9,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2003,
      "month": 6,
      "gmsl_mm": 40,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2003,
      "month": 7,
      "gmsl_mm": 40,
      "uncertainty_mm": 7
    },
    {
      "year": 2003,
      "month": 8,
      "gmsl_mm": 42.4,
      "uncertainty_mm": 7
    },
    {
      "year": 2003,
      "month": 9,
      "gmsl_mm": 43.6,
      "uncertainty_mm": 7.1
    },
    {
      "year": 2003,
      "month": 10,
      "gmsl_mm": 44.3,
      "uncertainty_mm": 7.1
    },
    {
      "year": 2003,
      "month": 11,
      "gmsl_mm": 41,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2003,
      "month": 12,
      "gmsl_mm": 39.3,
      "uncertainty_mm": 7
    },
    {
      "year": 2004,
      "month": 1,
      "gmsl_mm": 36.3,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2004,
      "month": 2,
      "gmsl_mm": 33.4,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2004,
      "month": 3,
      "gmsl_mm": 33.9,
      "uncertainty_mm": 7
    },
    {
      "year": 2004,
      "month": 4,
      "gmsl_mm": 34.9,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2004,
      "month": 5,
      "gmsl_mm": 39.2,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2004,
      "month": 6,
      "gmsl_mm": 41.5,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2004,
      "month": 7,
      "gmsl_mm": 40.4,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2004,
      "month": 8,
      "gmsl_mm": 41.6,
      "uncertainty_mm": 7
    },
    {
      "year": 2004,
      "month": 9,
      "gmsl_mm": 38.6,
      "uncertainty_mm": 7
    },
    {
      "year": 2004,
      "month": 10,
      "gmsl_mm": 37.3,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2004,
      "month": 11,
      "gmsl_mm": 34.5,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2004,
      "month": 12,
      "gmsl_mm": 34.6,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2005,
      "month": 1,
      "gmsl_mm": 36.6,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2005,
      "month": 2,
      "gmsl_mm": 37.2,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2005,
      "month": 3,
      "gmsl_mm": 36.2,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2005,
      "month": 4,
      "gmsl_mm": 36.4,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2005,
      "month": 5,
      "gmsl_mm": 37.9,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2005,
      "month": 6,
      "gmsl_mm": 40,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2005,
      "month": 7,
      "gmsl_mm": 40.7,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2005,
      "month": 8,
      "gmsl_mm": 39.7,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2005,
      "month": 9,
      "gmsl_mm": 36.6,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2005,
      "month": 10,
      "gmsl_mm": 36,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2005,
      "month": 11,
      "gmsl_mm": 34.7,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2005,
      "month": 12,
      "gmsl_mm": 35.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2006,
      "month": 1,
      "gmsl_mm": 35.2,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2006,
      "month": 2,
      "gmsl_mm": 37.8,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2006,
      "month": 3,
      "gmsl_mm": 43,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2006,
      "month": 4,
      "gmsl_mm": 44.7,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2006,
      "month": 5,
      "gmsl_mm": 43.4,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2006,
      "month": 6,
      "gmsl_mm": 40.8,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2006,
      "month": 7,
      "gmsl_mm": 40.3,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2006,
      "month": 8,
      "gmsl_mm": 42.2,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2006,
      "month": 9,
      "gmsl_mm": 43.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2006,
      "month": 10,
      "gmsl_mm": 44.6,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2006,
      "month": 11,
      "gmsl_mm": 44.2,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2006,
      "month": 12,
      "gmsl_mm": 39.1,
      "uncertainty_mm": 7
    },
    {
      "year": 2007,
      "month": 1,
      "gmsl_mm": 35.6,
      "uncertainty_mm": 7
    },
    {
      "year": 2007,
      "month": 2,
      "gmsl_mm": 31.4,
      "uncertainty_mm": 7
    },
    {
      "year": 2007,
      "month": 3,
      "gmsl_mm": 34.3,
      "uncertainty_mm": 7.1
    },
    {
      "year": 2007,
      "month": 4,
      "gmsl_mm": 38.3,
      "uncertainty_mm": 7.1
    },
    {
      "year": 2007,
      "month": 5,
      "gmsl_mm": 45.5,
      "uncertainty_mm": 7.2
    },
    {
      "year": 2007,
      "month": 6,
      "gmsl_mm": 49.1,
      "uncertainty_mm": 7.2
    },
    {
      "year": 2007,
      "month": 7,
      "gmsl_mm": 50.5,
      "uncertainty_mm": 7.2
    },
    {
      "year": 2007,
      "month": 8,
      "gmsl_mm": 50.5,
      "uncertainty_mm": 7.3
    },
    {
      "year": 2007,
      "month": 9,
      "gmsl_mm": 47.9,
      "uncertainty_mm": 7.1
    },
    {
      "year": 2007,
      "month": 10,
      "gmsl_mm": 46.5,
      "uncertainty_mm": 7
    },
    {
      "year": 2007,
      "month": 11,
      "gmsl_mm": 46.8,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2007,
      "month": 12,
      "gmsl_mm": 45.4,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2008,
      "month": 1,
      "gmsl_mm": 46.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2008,
      "month": 2,
      "gmsl_mm": 46.1,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2008,
      "month": 3,
      "gmsl_mm": 52.5,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2008,
      "month": 4,
      "gmsl_mm": 56.3,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2008,
      "month": 5,
      "gmsl_mm": 60.1,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2008,
      "month": 6,
      "gmsl_mm": 60.1,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2008,
      "month": 7,
      "gmsl_mm": 59.3,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2008,
      "month": 8,
      "gmsl_mm": 55,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2008,
      "month": 9,
      "gmsl_mm": 50.9,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2008,
      "month": 10,
      "gmsl_mm": 46.8,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2008,
      "month": 11,
      "gmsl_mm": 46.8,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2008,
      "month": 12,
      "gmsl_mm": 46,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2009,
      "month": 1,
      "gmsl_mm": 47.5,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2009,
      "month": 2,
      "gmsl_mm": 46.8,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2009,
      "month": 3,
      "gmsl_mm": 49,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2009,
      "month": 4,
      "gmsl_mm": 50.2,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2009,
      "month": 5,
      "gmsl_mm": 55.6,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2009,
      "month": 6,
      "gmsl_mm": 59.6,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2009,
      "month": 7,
      "gmsl_mm": 62.7,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2009,
      "month": 8,
      "gmsl_mm": 62.9,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2009,
      "month": 9,
      "gmsl_mm": 63.6,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2009,
      "month": 10,
      "gmsl_mm": 63.9,
      "uncertainty_mm": 6.8
    },
    {
      "year": 2009,
      "month": 11,
      "gmsl_mm": 65.6,
      "uncertainty_mm": 6.9
    },
    {
      "year": 2009,
      "month": 12,
      "gmsl_mm": 68.8,
      "uncertainty_mm": 7
    },
    {
      "year": 2010,
      "month": 1,
      "gmsl_mm": 67.6,
      "uncertainty_mm": 7.1
    },
    {
      "year": 2010,
      "month": 2,
      "gmsl_mm": 67.6,
      "uncertainty_mm": 7.1
    },
    {
      "year": 2010,
      "month": 3,
      "gmsl_mm": 63.2,
      "uncertainty_mm": 7.1
    },
    {
      "year": 2010,
      "month": 4,
      "gmsl_mm": 65,
      "uncertainty_mm": 7
    },
    {
      "year": 2010,
      "month": 5,
      "gmsl_mm": 61.7,
      "uncertainty_mm": 7.1
    },
    {
      "year": 2010,
      "month": 6,
      "gmsl_mm": 61.8,
      "uncertainty_mm": 7.1
    },
    {
      "year": 2010,
      "month": 7,
      "gmsl_mm": 61,
      "uncertainty_mm": 7.1
    },
    {
      "year": 2010,
      "month": 8,
      "gmsl_mm": 63.3,
      "uncertainty_mm": 7.1
    },
    {
      "year": 2010,
      "month": 9,
      "gmsl_mm": 65.2,
      "uncertainty_mm": 7.1
    },
    {
      "year": 2010,
      "month": 10,
      "gmsl_mm": 68.7,
      "uncertainty_mm": 7.1
    },
    {
      "year": 2010,
      "month": 11,
      "gmsl_mm": 71.1,
      "uncertainty_mm": 7.1
    },
    {
      "year": 2010,
      "month": 12,
      "gmsl_mm": 72.8,
      "uncertainty_mm": 7.4
    },
    {
      "year": 2011,
      "month": 1,
      "gmsl_mm": 70.4,
      "uncertainty_mm": 7.4
    },
    {
      "year": 2011,
      "month": 2,
      "gmsl_mm": 68.5,
      "uncertainty_mm": 7.4
    },
    {
      "year": 2011,
      "month": 3,
      "gmsl_mm": 67.2,
      "uncertainty_mm": 7.5
    },
    {
      "year": 2011,
      "month": 4,
      "gmsl_mm": 70.6,
      "uncertainty_mm": 7.5
    },
    {
      "year": 2011,
      "month": 5,
      "gmsl_mm": 72.6,
      "uncertainty_mm": 7.5
    },
    {
      "year": 2011,
      "month": 6,
      "gmsl_mm": 73.2,
      "uncertainty_mm": 7.6
    },
    {
      "year": 2011,
      "month": 7,
      "gmsl_mm": 72.1,
      "uncertainty_mm": 7.6
    },
    {
      "year": 2011,
      "month": 8,
      "gmsl_mm": 69.3,
      "uncertainty_mm": 7.6
    },
    {
      "year": 2011,
      "month": 9,
      "gmsl_mm": 67,
      "uncertainty_mm": 7.6
    },
    {
      "year": 2011,
      "month": 10,
      "gmsl_mm": 62.6,
      "uncertainty_mm": 7.6
    },
    {
      "year": 2011,
      "month": 11,
      "gmsl_mm": 58.7,
      "uncertainty_mm": 7.6
    },
    {
      "year": 2011,
      "month": 12,
      "gmsl_mm": 55.4,
      "uncertainty_mm": 7.7
    },
    {
      "year": 2012,
      "month": 1,
      "gmsl_mm": 58.5,
      "uncertainty_mm": 7.7
    },
    {
      "year": 2012,
      "month": 2,
      "gmsl_mm": 63.8,
      "uncertainty_mm": 7.7
    },
    {
      "year": 2012,
      "month": 3,
      "gmsl_mm": 72.5,
      "uncertainty_mm": 8.3
    },
    {
      "year": 2012,
      "month": 4,
      "gmsl_mm": 80.4,
      "uncertainty_mm": 8.3
    },
    {
      "year": 2012,
      "month": 5,
      "gmsl_mm": 82,
      "uncertainty_mm": 8.4
    },
    {
      "year": 2012,
      "month": 6,
      "gmsl_mm": 82.4,
      "uncertainty_mm": 8.4
    },
    {
      "year": 2012,
      "month": 7,
      "gmsl_mm": 78.1,
      "uncertainty_mm": 8.4
    },
    {
      "year": 2012,
      "month": 8,
      "gmsl_mm": 78.8,
      "uncertainty_mm": 8.4
    },
    {
      "year": 2012,
      "month": 9,
      "gmsl_mm": 78.6,
      "uncertainty_mm": 8.4
    },
    {
      "year": 2012,
      "month": 10,
      "gmsl_mm": 80.8,
      "uncertainty_mm": 8.4
    },
    {
      "year": 2012,
      "month": 11,
      "gmsl_mm": 79.4,
      "uncertainty_mm": 8.4
    },
    {
      "year": 2012,
      "month": 12,
      "gmsl_mm": 77.7,
      "uncertainty_mm": 8.8
    },
    {
      "year": 2013,
      "month": 1,
      "gmsl_mm": 70.5,
      "uncertainty_mm": 8.8
    },
    {
      "year": 2013,
      "month": 2,
      "gmsl_mm": 65.7,
      "uncertainty_mm": 8.8
    },
    {
      "year": 2013,
      "month": 3,
      "gmsl_mm": 67,
      "uncertainty_mm": 8.8
    },
    {
      "year": 2013,
      "month": 4,
      "gmsl_mm": 69.8,
      "uncertainty_mm": 8.8
    },
    {
      "year": 2013,
      "month": 5,
      "gmsl_mm": 72,
      "uncertainty_mm": 8.8
    },
    {
      "year": 2013,
      "month": 6,
      "gmsl_mm": 71.5,
      "uncertainty_mm": 8.8
    },
    {
      "year": 2013,
      "month": 7,
      "gmsl_mm": 71.2,
      "uncertainty_mm": 8.8
    },
    {
      "year": 2013,
      "month": 8,
      "gmsl_mm": 71.6,
      "uncertainty_mm": 8.8
    },
    {
      "year": 2013,
      "month": 9,
      "gmsl_mm": 68.8,
      "uncertainty_mm": 8.8
    },
    {
      "year": 2013,
      "month": 10,
      "gmsl_mm": 66.4,
      "uncertainty_mm": 8.9
    },
    {
      "year": 2013,
      "month": 11,
      "gmsl_mm": 59.7,
      "uncertainty_mm": 9
    },
    {
      "year": 2013,
      "month": 12,
      "gmsl_mm": 58.5,
      "uncertainty_mm": 9
    }
  ],
  "meta": {
    "title": "Global Mean Sea Level Monthly (CSIRO 1880-2013) - Free Download",
    "description": "1608 monthly global mean sea level observations (mm) reconstructed from tide gauges by CSIRO, 1880-2013. Source: CSIRO via datasets/sea-level-rise. Contains 1608 records. Download in Excel, CSV, PDF formats.",
    "seo_title": "Global Mean Sea Level Monthly (CSIRO 1880-2013) | ListBase",
    "seo_description": "Download Global Mean Sea Level Monthly (CSIRO 1880-2013) — 1608 records. Available in Excel, CSV, PDF formats.",
    "key_takeaways": [
      "Contains 1608 records / 4 fields",
      "Available for free download in Excel, CSV, and PDF formats",
      "Data sourced from: https://github.com/datasets/sea-level-rise"
    ]
  }
}