"kxx v time
0.0000000000000	0.0000000000000
0.3515742187500	-0.0000200396561
0.7031484375000	-0.0000396848169
1.0547226562500	-0.0000522362442
1.4062968750000	-0.0000498160192
1.7578710937500	-0.0000427804901
2.1094453125000	-0.0000517954275
2.4610195312500	-0.0000559731836