dset ^mnth.u.y%y4                                                               
options big_endian template                                                     
undef  -9999.                                                                   
title monthly GODAS                                                             
xdef 360 linear 0.5 1.                                                          
ydef 139 linear -74. 1.                                                         
zdef 32 levels                                                                  
     5.0   15.0   25.0   35.0   45.0   55.0   65.0   75.0   85.0   95.0         
   105.0  115.0  125.0  135.0  145.0  155.0  165.0  175.0  185.0  195.0         
   205.0  215.0  225.0  238.5  262.3  303.0  366.8  459.1  584.6  747.2         
   949.6  1193.5                                                                
tdef  485 Linear 1jan1979 1mon   
*                                                                               
vars 1                                                                          
u    32   99 cm/s                                                               
endvars