A.3.7~3.1 B.3.0~2.3 C.2.2~1.6 D.1.5~0.7
A..2.3~3.0 B..2.6~2.9 C..2.4~2.8 D..2.3~2.6
A.±10% B.±12% C.±15% D.±20%
A.2400 B.1800 C.2000 D.2600
A.20 B.15 C.63 D.25