dset /data/clima/EBUDIR/output/ENS/upp500.gdat 
*indset /data/clima/oper/nmme4/grads/input_g 
undef 9.999e+20 
title avn model 
xdef  241  linear  -10.0 0.25 
ydef  101  linear   28.0  0.25 
tdef 860 linear 00Z01dec1981 06hr 
zdef 1 levels 500 
vars 3 
u   1 33,100,500       ! 10m u-wind 
v   1 34,100,500       ! 10m v-wind 
z   1 07,100,500       ! 10m v-wind 
endvars