0,None,0
1000,contrast,1,0.1
2000,contrast,1,0.2
3000,contrast,1,0.3
4000,contrast,1,0.4
5000,contrast,1,0.5
6000,contrast,1,0.6
7000,contrast,1,0.7
8000,contrast,1,0.8
9000,contrast,1,0.9
