CPTv10+ files for mean $partialdiff sub X$ [ WORLDCLIM prec ]

WORLDCLIM[bio7 tmax tmean URUGUAY prec alt bio5 bio12 bio1 bio6 tmin ]
grid: /X (degree_east) ordered (59.99583W) to (30.00417W) by 0.008333334 N= 3600 pts :grid
grid: /Y (degree_north) ordered (30.00417S) to (59.99583S) by 0.008333334 N= 3600 pts :grid
mean $partialdiff sub X$ [ WORLDCLIM prec ] [ Y |]