A.0.2~0.6kPa(1.5~4.5mmHg)
B.O.7~2.0kPa(5.3~15.OmmHg)
C.2.1~3.0kPa(15.8~22.5mmHg)
D.3.1~3.6kPa(23.3~27.0mmHg)
E.3.7~4.6kPa(27.8~34.6mmHg)