field name: Gpp
data type: int16
scale_factor:    0.000100
valid_range:    0  32700
_FillValue:    32767
long_name:  MOD17A2 -- MODIS Gridded monthly Composite GPP
units:  kg_C/m^2

*******************************************************

field name: PsnNet
data type: int16
scale_factor:    0.000100
valid_range:    -32768  32700
_FillValue:    32767
long_name:  MOD17A2 -- MODIS Gridded monthly Composite (GPP minus maint resp) as PsnNet
units:  kg_C/m^2