dset ^gfs_3_%y4%m2%d2%h2
index ^gfs_3_2008031000.idx
undef 9.999E+20
title gfs_3_2008031000
*  produced by grib2ctl v0.9.12.5p34c
dtype grib 255
options yrev template
ydef 41 linear -40.000000 1
xdef 26 linear 30.000000 1.000000
tdef 4 linear 00Z10mar2008 6hr
zdef 3 levels
925 850 500 
vars 1
VGRDprs 3 34,100,0 ** v wind [m/s]
ENDVARS
