k1 = k0
k2 = k1
k3 = k2
k4 = k31
k5 = k33
k6 = k32
k7 = k34
k8 = k4
k9 = k5
k10 = k6
k11 = k7
k12 = k8
k13 = k9
k14 = k10
k15 = atot
k16 = ntot
k17 = n
k18 = ki
k19 = compartment