Analytical model 
Lc =       -74.14713
Lc =       -74.14713
Lcsun =       -33.79147
Lcsun =       -33.79147
Lcsha =       -40.35566
Lcsha =       -40.35566
 
irup =       446.83102
irveg =       -74.14713
irsoi =        27.31611
 
Norman model 
irup =       447.16643
irveg =       -75.54891
irsoi =        28.38247