"vel[2] v time
0.0000000000000	0.0000000000000
0.3515742187500	0.0007551276159
0.7031484375000	0.0009756832211
1.0547226562500	0.0011930655909
1.4062968750000	0.0014364109775
1.7578710937500	0.0017215605601
2.1094453125000	0.0020296140116
2.4610195312500	0.0023659526899