"kxy v time
0.0000000000000	0.0000000000000
0.3515742187500	-0.0000014513314
0.7031484375000	-0.0000035799223
1.0547226562500	-0.0000077488430
1.4062968750000	-0.0000116387124
1.7578710937500	-0.0000136624422
2.1094453125000	-0.0000126750873
2.4610195312500	-0.0000150246361