B A 71 dB

E C 72 dB

D C 72 dB

C A 73 dB

C A 71 dB

C C 72 dB

D C 73 dB

A A 70 dB

C C 73 dB

C C 75 dB

C C 75 dB

C B 72 dB

C C 75 dB

C C 72 dB

C A 72 dB

C A 70 dB

C A 70 dB

C A 72 dB

B B 72 dB