'reinit';'clear';'open gfs.t00z.pgrb2.0p25.f108.ctl'
'set vpage off'
'set mproj latlon';'set grads off';'set grid off'
'set lon 312 317';'set lat 20 25';'set lev 500';'set xlint 1';'set ylint 1'
'set xlopts 1 5 0.12';'set ylopts 1 5 0.12'
'set gxout contour';'set cthick 8';'set cint 10'
'display RHprs'
'draw title RH 500hPa AL06 3KMOnConv 108'
'set display color white'
'printim OnConv_2018090100_RH500_f108.gif x1100 y850'
*pull dummy;'clear'
quit