k1 = 1/17;
k2 = 1/100;
k3 = 3;
k4 = 1;
k5 = 1/2;
k6 = 1;
k7 = 1/40;
k8 = 1/100;
k9 = 1/4;
k10 = 1/50;
k11 = 1/200;
k12 = 3/2;
k13 = 1/200;
k14 = 1/200;
k15 = 1/200;
k16 = 1/2;
k17 = 1;
k18 = 1;