A B 69 dB

C A 71 dB

C A 71 dB

D B 72 dB

B A 71 dB

C C 71 dB

C B 70 dB

B A 71 dB

B A 71 dB

A B 69 dB

B B 70 dB

B B 71 dB

C A 71 dB

C C 72 dB

F B 71 dB

B B 70 dB

B A 71 dB

C C 71 dB

D B 72 dB

B A 71 dB