"kxy v time
0.0000000000000	0.0000000000000
0.3515742187500	-0.0000015137296
0.7031484375000	-0.0000028041814
1.0547226562500	-0.0000061478255
1.4062968750000	-0.0000096189087
1.7578710937500	-0.0000120598130
2.1094453125000	-0.0000120650357
2.4610195312500	-0.0000120292867