C C 75 dB

D B 74 dB

B B 75 dB

C A 74 dB

B B 73 dB

C B 71 dB

B C 74 dB

C B 71 dB

C B 73 dB

C B 73 dB

A B 72 dB

B A 74 dB

B A 74 dB

C A 70 dB

C B 74 dB

C B 73 dB

C A 73 dB

C A 69 dB

A B 72 dB

C A 74 dB