step70=[0 0.002 0.019 0.049 0.092 0.149 0.211 0.296 0.398 0.517 0.648 0.811 0.989 1.194 1.426 1.681 1.953 2.285 2.622 2.998 3.407 3.849 4.329 4.822 5.388 5.958 6.59 7.115 7.693 8.32 8.868 9.647 10.467 11.332 12.166 12.996 13.778 14.77 15.723 16.595 17.556 ];
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,step70);
