&lineardim
 nxdim=1024,
 nydim=1024,
 nlevels=21,
 nlayer= 10,
 zz =       0.,       0.,       0.,       0.,       0.,       0.,       0.,       0.,       0.,       0.,
 bvf=      NaN,      NaN,      NaN,      NaN,      NaN,      NaN,      NaN,      NaN,      NaN,      NaN,
 dd =      NaN,      NaN,      NaN,      NaN,      NaN,      NaN,      NaN,      NaN,      NaN,      NaN,
 ff =      5.0,      5.0,      5.0,      5.0,      5.0,      5.0,      5.0,      5.0,      5.0,      5.0,
 &end
 
 &linearnl
 dtg= '0803111200',