step60=[0 0.002 0.017 0.041 0.074 0.119 0.17 0.249 0.327 0.434 0.549 0.69 0.85 1.029 1.231 1.458 1.741 2.03 2.338 2.694 3.079 3.531 3.996 4.5 5.035 5.616 6.1 6.674 7.303 7.864 8.518 9.204 10.003 10.904 11.799 12.619 13.638 14.217 15.324 15.798 16.715 ];
a=[0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 ];
plot(a,step60);
