"trK v time
0.0000000000000	0.0000000000000
0.4000000000000	0.0473717799199
0.8000000000000	0.0945480254180
1.2000000000000	0.1438602495857
1.6000000000000	0.1970602316838
2.0000000000000	0.2542301835589