x	y1	y2	y3
1	7.0	-0.2	-0.9
2	6.9	0.8	0.6
3	9.5	5.7	3.5
4	14.5	11.3	8.4
5	18.2	17.0	13.5
6	21.5	22.0	17.0
7	25.2	24.8	18.6
8	26.5	24.1	17.9
9	23.3	20.1	14.3
10	18.3	14.1	9.0
11	13.9	8.6	3.9
12	9.6	2.5	1.0