n_balls	length	repetition
0	78	1
1	82.61	1
2	85.85	1
3	90.26	1
4	95.05	1
5	102.17	1
6	108.86	1
0	79.21	2
2	85.55	2
3	90.06	2
4	94.35	2
5	98.85	2
6	106.93	2
7	115.87	2