712    'idm   ' = longitudinal array size
  331    'jdm   ' = latitudinal  array size
    0    'mapflg' = map flag (-1=unknown,0=mercator,2=uniform,4=f-plane)
plon:  min,max =        43.12000      100.00000
plat:  min,max =         5.03351       29.97148
qlon:  min,max =        43.07999       99.96000
qlat:  min,max =         4.99366       29.93682
ulon:  min,max =        43.07999       99.96000
ulat:  min,max =         5.03351       29.97148
vlon:  min,max =        43.12000      100.00000
vlat:  min,max =         4.99366       29.93682
pang:  min,max =         0.00000        0.00000
pscx:  min,max =      7706.02393     8861.29004
pscy:  min,max =      7705.98779     8861.28125
qscx:  min,max =      7708.71094     8861.83008
qscy:  min,max =      7708.74512     8861.81152
uscx:  min,max =      7706.02393     8861.29004
uscy:  min,max =      7705.98779     8861.28125
vscx:  min,max =      7708.71094     8861.83008
vscy:  min,max =      7708.74512     8861.81152
cori:  min,max =  0.0000126949435 0.0000727819133
pasp:  min,max =         0.99999        1.00001