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$integral dY$ $partialdiff sub X$ [ WORLDBATH432 bath ]

Longitude grid: /X (degree_east) periodic (5.9604645E-08W) to (0.8332825W) by 0.8333334 N= 432 pts :grid
Latitude grid: /Y (degree_north) ordered (90.41666N) to (90.41666S) by 0.8333333 N= 218 pts :grid

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