"kxx v time
0.0000000000000	0.0000000000000
0.1000000000000	0.0021045049931
0.2000000000000	0.0042127441679
0.3000000000000	0.0063283834593
0.4000000000000	0.0084548004819
0.5000000000000	0.0105950537529