"vel[0] v time
0.0000000000000	0.0000000000000
0.3515742187500	-0.0186421384049
0.7031484375000	-0.0198269661811
1.0547226562500	-0.0193106672346
1.4062968750000	-0.0183018676176
1.7578710937500	-0.0179487570231
2.1094453125000	-0.0214228128038
2.4610195312500	-0.0248155746466