1000	3	-3
1500	3	-3
1501	2.2	-2.2
2000	2.2	-2.2
2001	1.5	-1.35
10000	1.5	-1.35
10001	3	-3
14000	3	-3
14001	3.5	-3.5
16000	3.5	-3.5
16001	4.5	-4.5
20000	4.5	-4.5