10, -26.5
13, -24.5
16, -22.5
20, -20.5
25, -18.5
32, -16.5
40, -14.5
50, -12.5
63, -11
80, -9
100, -7.5
125, -6
160, -4.5
200, -3
250, -2
315, -1
400, -0.5
500, 0
630, 0
800, 0
1000, 0
1250, 2
1600, 5.5
2000, 8
2500, 10
3150, 11
4000, 11
5000, 10
6300, 8.5
8000, 6
10000, 3
12500, 0
16000, -4
20000, -7.5