A.1~5 B.5~10 C.10~15 D.15~20
A.0.05~0.5 B.0.5~0.1 C.0.1~0.15 D.0.2~0.25
A.0.01~0.04 B.0.05~0.08 C.0.09~0.12 D.0.13~0.16