LUE_BIOMASS             Light Use Efficiency Model to Estimate Biomass
LUE_BIOMASS_VPD         Light Use Efficiency Model to Estimate Biomass
                        with Vapour Pressure Deficit
LUE_YIELD               Light Use Efficiency Model to Estimate Crop
                        Yield
LUE_YIELD_VPD           Light Use Efficiency Model to Estimate Crop
                        Yield with Vapour Pressure Deficit
fpar                    Fpar data
par1                    Photosynthetically Active Radiation
tdew                    Dewpoint Temperature
tmax                    Maximum temperature data
tmin                    Minimum temperature data
