dset mask
options little_endian
undef 99.9
xdef 360 linear 180.5 1.0
ydef 180 linear -89.5 1.0
zdef 1  levels 1000
tdef 37 linear 0z29dec000 10dy02hr40mn
vars 1
mask 0 99 LandSee1x1mask
endvars