"vel[1] v time
0.0000000000000	0.0000000000000
0.3515742187500	0.0007457193348
0.7031484375000	0.0009581139593
1.0547226562500	0.0011585622884
1.4062968750000	0.0013835141109
1.7578710937500	0.0016297774557
2.1094453125000	0.0018900857820
2.4610195312500	0.0021416592050