- 
     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 (89.95834S) to (89.95834N) by 0.08333334 N= 2160 pts :grid
 - 
    detrended-bfl   $integral dX$   $partialdiff sub Y$ [ WORLDBATH bath ]    [ X | Y]
   |