$partialdiff sub P$ [ NOAA NCEP-NCAR CDAS-1 MONTHLY Intrinsic PressureLevel CBQW ]

grid: /T (0.01 second-1) ordered (-131.5 0.01 second-1) to (757.5 0.01 second-1) by 1.3574641E-05 N= 65489760 pts :gridforrtl: severe (174): SIGSEGV, segmentation fault occurred Stack trace terminated abnormally.