grads报错不能出图，该如何解决

忆馨语

.gs脚本
'reinit'
'sdfopen C:\Users\lenovo\Desktop\january.nc'
'set grid off'
'set grads off'
'set parea 1.0 10.0 0.0 8.5'

'set lon 60 150'
'set lat 10 50'
'set z 1'

'set gxout contour'
'set ccolor 6'
'set cstyle 1'
'set cthick 5'
'set cint 10'
'set clskip 2'
'set clopts 0 5 0.2'

'define msdwswrf1=ave(msdwswrf,t= 00z01JAN1979,t= 00z01JAN2018)'
'd msdwswrf1'
;

错误Request is completely outside file limits
Cannot contour grid - all undefined values
ga->

伽蓝鸟

时间范围不对？