"grr v time
0.0000000000000	1.0000000000000
0.4000000000000	1.0010351611472
0.8000000000000	1.0041535122068
1.2000000000000	1.0093926119911
1.6000000000000	1.0168150294037
2.0000000000000	1.0265076634642