"vel[0] v time
0.0000000000000	0.0000000000000
0.3515742187500	0.0186283598981
0.7031484375000	0.0198196784013
1.0547226562500	0.0193057919116
1.4062968750000	0.0182965197260
1.7578710937500	0.0179636418344
2.1094453125000	0.0214434762895
2.4610195312500	0.0248418090161