$partialdiff sub X$ [ Malawi dekadal rainfall rfe_mergeddiff_percent ]
| Longitude | grid: /X (degree_east) ordered (32.64375E) to (35.98125E) by 0.03750002 N= 90 pts :grid | 
|---|---|
| Latitude | grid: /Y (degree_north) ordered (9.35625S) to (17.26875S) by 0.03750001 N= 212 pts :grid | 
| Time | grid: /T (days since 1960-01-01) ordered [ (1-10 Jan 1981) (11-20 Jan 1981) (21-31 Jan 1981) ... (21-31 Dec 2020)] N= 1440 pts :grid |