$partialdiff sub X$ root mean sq anom [ ICPAC Projections RCA-MPI hist monthly GHA rainfall precipitation ]
Longitude: [21.865E,51.365E]; Time: [Jan 1951,Dec 2005]; monthly
∂
X
Precipitation
(57.2957795130823 kilogram meter-1 radian-1 east second-2) [ Longitude Time ]