dset ^lpw%y4_L2_mon.grd
undef -999.9
title NVAP Layerd Water vapor  700-500mb
options template yrev
*format yrev
XDEF  144 LINEAR   1.25  2.5
YDEF  72  LINEAR  -88.75 2.5
zdef     1 levels 1 1 
tdef 144  linear       12Z01JAN1988      1mon
vars    1
lpw2      1 212,8,0 layer precip water 700-500mb (mm)                   
endvars
* title:lpw2: NVAP Layerd Water vapor 700-500mb  $_month $_year