D C 73 dB

C A

D A 72 dB

D B 72 dB

C A 72 dB

C A 73 dB

D C 73 dB

D B 73 dB

C C 71 dB

C B 71 dB

C A 73 dB

C B 73 dB

C A 73 dB

D B 73 dB

C B 72 dB

E B 73 dB

F C 72 dB

C B 72 dB

C A 73 dB