i	y
1	10.8
1	10.5
1	14.0
1	13.5
1	8.0
1	9.5
1	11.8
1	10.0
1	8.7
1	9.0
1	9.8
1	13.8
1	14.7
1	10.3
1	12.8
2	8.0
2	7.3
2	14.1
2	9.8
2	7.1
2	6.3
2	10.0
2	7.1
2	7.9
2	6.1
2	6.9
2	11.0
2	10.0