Accessing data using CPT (ingrid imposes a limit of 3999 points in the degrees-east grid)

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root mean sq mean [ ( NOAA NCEP-NCAR CDAS-1 MONTHLY Intrinsic PressureLevel temp ) - ( NOAA NCEP-NCAR CDAS-1 MONTHLY Intrinsic PressureLevel temp climatology ) ]

P grid: /P (mb) ordered [ (775.0) (650.0) (550.0) (450.0) (350.0) (275.0) (225.0)] :grid

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CPTv10+