A.2~10μv B.10~60μv C.60~100μv D.100~150μv E.150~200μv
A.0.5mV以下 B.5~20mV C.20~40mV D.40~50mV E.55mV以上
A.0~10ms B.20~30ms C.10~20ms D.30~40ms E.40~50ms