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max $partialdiff sub X$ [ CMC FCLIMDEX R10 ]

Longitude grid: /X (degree_east) ordered (73.03125W) to (59.46875W) by 0.96875 N= 15 pts :grid
Latitude grid: /Y (degree_north) ordered (13.5N) to (0.5N) by 1.0 N= 14 pts :grid

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