1,21
4,3.76,4.24
5,4.76,5.24
6,5.76,6.24
7,6.71,7.29
8,7.71,8.29
10,9.71,10.29
12,11.65,12.35
14,13.65,14.35
16,15.65,16.35
18,17.65,18.35
20,19.58,20.42
22,21.58,22.42
24,23.58,24.42
26,25.58,26.42
28,27.58,28.42
30,29.58,30.42
32,31.5,32.5
34,33.5,34.5
36,35.5,36.5
38,37.5,38.5
40,39.5,40.5
