Info

	XI_1	XI_2	XI_3	XI_4
1	100	52.5	72.5	30
2	100	56	80	52
3	95	51.5	99	38
4	85	57	20	45
5	95	58	100	55
6	95	57	70	22
7	85	53.5	77.5	30
8	87.5	32	70	60
9	80	53.5	50	30
10	95	48.5	90
11	82.5	67	58	60
12	97.5	85	46.5	50
13	92.5	64.5	61	58
14	85	57	85	28
15	92.5	61	82.5	55
16	90	58.5	77.5	50
17	95		75	58
18	87.5	55.5	55	58
19	85	53.5	60	70
20	95	53	62	50
21	100	50.5	65	43
22	95	22	45	49
23	100	20	74	20
24	77.5	52	20	30
25		57.5	75	58
26	97.5	48.5	57.5	14
27	92.5	36	48	70
28	87.5	47	54
29		55	55