Using MEUK - DEM External Drift
data.txt
NCOL = 200
NROW = 100
XMIN = 1067275
XMAX = 1072225
YMIN = 241459
YMAX = 243934
COLSIZE = 25
ROWSIZE = 25

Using Spherical Variogram Model
Sill = 500
Range = 3000
Nugget = 0
Anisotropy = 1