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

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NOAA NCEP EMC CFS MONTHLY PressureLevel psi

Longitude grid: /X (degree_east) periodic (0) to (2.5W) by 2.5 N= 144 pts :grid
Latitude grid: /Y (degree_north) ordered (90N) to (90S) by 2.5 N= 73 pts :grid
P grid: /P (mb) ordered (850 mb) to (200 mb) N= 2 pts :grid
Member grid: /M (unitless) ordered (1.0) to (15.0) by 1.0 N= 15 pts :grid
L grid: /L (months) ordered (0.5 months) to (8.5 months) by 1.0 N= 9 pts :grid
S grid: /S (months since 1960-01-01) ordered (0000 1 Jan 1981) to (0000 1 Dec 2009) by 1.0 N= 348 pts :grid

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