i	j	k	y
1	1	1	32.94
1	1	2	35.98
1	2	1	34.76
1	2	2	32.40
2	1	1	30.55
2	1	2	32.64
2	2	1	32.37
2	2	2	32.04
3	1	1	31.23
3	1	2	31.09
3	2	1	30.62
3	2	2	30.42
4	1	1	34.41
4	1	2	34.88
4	2	1	34.07
4	2	2	33.87
5	1	1	35.61
5	1	2	35.00
5	2	1	33.65
5	2	2	32.91