C B 72 dB

C C 72 dB

C C 72 dB

A A 70 dB

C B 73 dB

C B 73 dB

C B 71 dB

C B 71 dB

C A

B A 71 dB

C A 70 dB

C C 71 dB

C B 72 dB

C B 71 dB

C C 72 dB

C B 71 dB

C B 71 dB

B A 70 dB

D C 71 dB

B A 70 dB