C A 75 dB

C B 72 dB

C A 73 dB

C B 73 dB

D A 72 dB

C A 75 dB

D A 74 dB

C B 68 dB

B C 75 dB

D B 75 dB

C B 68 dB

C B 73 dB

D B 69 dB

C A 71 dB

C A 75 dB

C A 73 dB

D A 74 dB

B C 75 dB

B B 74 dB

C C 72 dB