alfar = a* exp(b*r_CN) r_CN -> calculated with CN function but carefull with ETS mean (see other issue) pine -> a = 0.1678; b=0.03297 spruce -> a=0.07022; b=0.03581
alfar = a* exp(b*r_CN)
r_CN -> calculated with CN function but carefull with ETS mean (see other issue)
pine -> a = 0.1678; b=0.03297
spruce -> a=0.07022; b=0.03581