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     Ingrid:
     HTMLwords
    WORLDBATH[bath
]
    grid: /X  (degree_east) ordered (0.04166666W) to (0.04168701W) by 0.08333333 N= 4321 pts :grid
    grid: /Y  (degree_north) ordered (90S) to (90N) by 0.08333334 N= 2161 pts :grid
    $partialdiff sub Y$   $integral dY$   detrended-bfl   $integral dX$ [ WORLDBATH bath ]      [ X | Y] |