0	-10.00
35	6.00
40	5.90
50	5.50
63	5.90
80	6.70
100	6.50
125	6.30
160	6.00
200	5.95
250	4.20
280	4.00
1000    0.00
18000	-2.4
20000	-2.5
22050	-10