i	j	k	y
1	1	1	42.4
1	2	1	41.6
1	3	1	39.3
1	4	1	43.2
1	5	1	40.1
1	6	1	41.0
1	1	2	41.8
1	2	2	40.9
1	3	2	38.2
1	4	2	44.6
1	5	2	41.5
1	6	2	42.3
2	1	1	39.7
2	2	1	40.2
2	3	1	38.6
2	4	1	42.0
2	5	1	39.1
2	6	1	40.1
2	1	2	40.3
2	2	2	41.1
2	3	2	37.6
2	4	2	42.9
2	5	2	41.2
2	6	2	40.6