dset ^precipmonthly_usmx_le.bin
undef -999.9
options little_endian
title test
xdef   81 linear   -140.000  1.000
ydef   51 linear  10.000  1.000
zdef 1 linear  1 1
tdef 660 linear 01jan1949 1mo
vars 1
p    0 0 Monthly Total Precipitation (mm)
ENDVARS