1816 - April Sea Ice

               1     42.63     -47.87

1816 - April Sea Ice edge coordinates

       1   47.65  -52.73
       0   47.64   -52.7
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       0   47.62  -52.65
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       0   47.33     -52
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       0      47  -51.44
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       0   46.92   -51.3
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       0   45.79  -50.11
       0   45.78   -50.1
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       0   45.75     -50
       0   45.74  -49.99
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       0   45.68   -49.6
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       0      46  -48.12
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       0   46.21  -48.12
       0   46.25  -48.12
       0   46.28  -48.12
       0   46.32  -48.12
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       0   48.21   -48.7
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       0   48.71     -49
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