"kxx v time
0.0000000000000	-0.0000000000000
0.0250000000000	0.0021486296864
0.0500000000000	0.0039587027346
0.0750000000000	0.0051782591412
0.1000000000000	0.0056982801551
0.1250000000000	0.0055618048039
0.1500000000000	0.0049284252530
0.1750000000000	0.0040129606391
0.2000000000000	0.0032030984005
0.2250000000000	0.0029456398858
0.2500000000000	0.0028805371713