i	y
1	24.5
1	29.7
1	20.4
1	28.5
1	25.3
1	21.8
1	20.2
1	21.0
1	21.9
1	22.2
2	32.8
2	30.4
2	32.3
2	26.4
2	27.8
2	26.9
2	29.0
2	31.5
2	31.2
2	26.7
2	25.6
2	25.1
2	32.8
2	34.3
2	35.4