CPTv10+ files for mean $partialdiff sub X$ [ Rwanda RAB soil BLD_d ]

Rwanda RAB soil[AWC BLD bld TAW60 BLD_d AWC_ts AWC_d ]
grid: /X (degree_east) ordered (28.87054E) to (30.87946E) by 0.008928562 N= 226 pts :grid
grid: /Y (degree_north) ordered (2.84375S) to (1.058036S) by 0.008928572 N= 201 pts :grid
grid: /sl (cm) ordered [ (15.0) (30.0) (60.0) (100.0) (200.0)] :grid
mean $partialdiff sub X$ [ Rwanda RAB soil BLD_d ] [ Y sl |]