A.0.2-0.3 B.0.3-0.4 C.0.4-0.5 D.0.4-0.6
A.1:1 B.2:1 C.3:1 D.4:1
A.6.0~7.0kn B.6.0~7.2kn C.6.6~7.6 D.6.6~7.8