"kxy v time
0.0000000000000	0.0000000000000
0.3515742187500	-0.0000015229503
0.7031484375000	-0.0000028626708
1.0547226562500	-0.0000038307688
1.4062968750000	-0.0000042397474
1.7578710937500	-0.0000045580653
2.1094453125000	-0.0000057765648
2.4610195312500	-0.0000064608211