$integral dX$ $partialdiff sub X$ [ NOAA NCEP-NCAR CDAS-1 MONTHLY Intrinsic PressureLevel phi ]

grid: /T (gpm) ordered (-131.5 gpm) to (757.5 gpm) by 5.5510095E-06 N= 160151050 pts :gridforrtl: severe (174): SIGSEGV, segmentation fault occurred Stack trace terminated abnormally.