0	21.9	5	28.9
0	22.1	6	29.8
0	22.8	6	30.0
1	24.5	6	30.3
2	26.0	7	30.4
2	26.1	8	31.4
3	26.8	8	31.5
3	27.3	9	31.8
4	28.2	10	33.1
4	28.5