"vel[0] v time
0.0000000000000	0.0000000000000
0.3515742187500	0.0007551283960
0.7031484375000	0.0009756849081
1.0547226562500	0.0012136261872
1.4062968750000	0.0014779619775
1.7578710937500	0.0017648668228
2.1094453125000	0.0020690730518
2.4610195312500	0.0023897861482