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

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root mean sq [ NOAA NCEP-NCAR CDAS-1 mc6190 Intrinsic MSL pressure ]

Latitude grid: /Y (degree_north) ordered (90N) to (90S) by 2.5 N= 73 pts :grid
Time grid: /T (months since 01-Jan) periodic (Jan) to (Dec) by 1.0 N= 12 pts :grid

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CPTv10+