A .13.3~20.0kPa(100~150mmHg)
B .20.0~26.7kPa(150~200mmHg)
C .26.7~33.4kPa(200~250mmHg)
D .33.3~40.0kPa(250~300mmHg)
E .40.0~46.7kPa(300~350mmHg)