k1 = E
k2 = Rp
k3 = Nt
k4 = f
k5 = I
k6 = jp
k7 = j
k8 = phi
k9 = kc
k10 = Kc
k11 = Ko
k12 = chloroplast
k13 = RuBP
k14 = CO2
k15 = O2