"sample"	5	100	"diff"
0	3960	3960	0
1	3800	3800	0
2	3680	3640	40
3	3560	3520	40
4	3400	3360	40
5	3240	3200	40
6	3120	3080	40
7	2960	2920	40
8	2840	2760	80
9	2680	2600	80
10	2520	2440	80
11	2360	2320	40