$integral dY$ [ NOAA NCEP-NCAR CDAS-1 MONTHLY Intrinsic total_air_column PWAT ]
| Longitude | grid: /X (degree_east) periodic (0) to (2.5W) by 2.5 N= 144 pts :grid |
|---|---|
| Latitude | grid: /Y (degree_north) ordered (91.25N) to (91.25S) by 2.5 N= 74 pts :grid |
| Time | grid: /T (months since 1960-01-01) ordered (Jan 1949) to (Aug 2014) by 1.0 N= 788 pts :grid |
