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NOAA NCDC ERSST version3b err

with missing value: -999

Longitude grid: /X (degree_east) periodic (0) to (2W) by 2.0 N= 180 pts :grid
Latitude grid: /Y (degree_north) ordered (88N) to (88S) by 2.0 N= 89 pts :grid
zlev grid: /zlev (meters) ordered [ (0.0)] :grid
Time grid: /T (months since 1960-01-01) ordered (Jan 1854) to (Oct 2017) by 1.0 N= 1966 pts :grid

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