dset /clima/oper/nmme5ANA/maske/iran.gdat 
*indset /clima/oper/nmme5ANA/grads/input_g 
undef 9.999e+20 
title avn model 
xdef   431 linear   46.0  0.025 
ydef   331 linear  31.0  0.025 
tdef 1 linear 00Z01jan2009 01hr 
zdef 1 levels 1 
vars 1 
dmsk  0  59,1,0        ! dust mask 
endvars