"vel[1] v time
0.0000000000000	0.0000000000000
0.3515742187500	-0.0186421380522
0.7031484375000	-0.0198269657333
1.0547226562500	-0.0193106678262
1.4062968750000	-0.0183018687493
1.7578710937500	-0.0179487614367
2.1094453125000	-0.0214228175058
2.4610195312500	-0.0248155799494