"vel[0] v time
0.0000000000000	0.0000000000000
0.3515742187500	-0.0186421389948
0.7031484375000	-0.0198272084522
1.0547226562500	-0.0193110108612
1.4062968750000	-0.0183017665747
1.7578710937500	-0.0179518584885
2.1094453125000	-0.0214263733075
2.4610195312500	-0.0248196799489