DSET  ^T.jan.dat
TITLE  monthly longterm mean air temperature from the NCEP Reanalysis
OPTIONS BIG_ENDIAN YREV
UNDEF  -9.96921E36                                
XDEF  36 LINEAR   0.0  10.0                      
YDEF  19 LINEAR -90.0  10.0
ZDEF   9 LEVELS 
  1000.0 850.0 600.0 400.0 250.0 150.0 70.0 30.0 10.0
TDEF   1 LINEAR  1JAN1999   1MO                
VARS    1
T    9 99 Temperature                    degC
ENDVARS