"kxx v time
0.0000000000000	0.0000000000000
0.3515742187500	-0.0000210194775
0.7031484375000	-0.0000387587322
1.0547226562500	-0.0000559469588
1.4062968750000	-0.0000636977436
1.7578710937500	-0.0000568746761
2.1094453125000	-0.0000513822461
2.4610195312500	-0.0000631253889