k1 = a_1
k2 = K_1
k3 = b
k4 = a_2_plus
k5 = K_2_plus
k6 = a_2_minus
k7 = K_2_minus
k8 = a_3
k9 = K_3_3
k10 = a_4
k11 = K_4
k12 = a_5
k13 = K_5
k14 = K_3_2
k15 = a_0
k16 = b2f
k17 = b2r
k18 = compartment