dset ^mon_csrsw_1998.grads 
undef 340282346638528860000000000000000000000.000000 
title CERES/TRMM TOA Clear-sky upward Shortwave flux  
format yrev
XDEF  144 LINEAR   1.25  2.5
YDEF  72  LINEAR  -88.75 2.5
zdef     1 levels 1 1 
tdef 8  linear    JAN1998      1mo
vars    1
csrsw        1 212,8,0 TOA CSUSWRF W/M**2 
endvars
* title:csrsw: CERES/TRMM TOA Clear-Sky Reflected SW  $_month $_year