C A 74 dB

E C 75 dB

D B 72 dB

C A 74 dB

C B 72 dB

C B 73 dB

C B 72 dB

C A 75 dB

C A

C A 73 dB

E A 74 dB

B A 71 dB

E F 75 dB

C A 73 dB

D C 74 dB

C C 73 dB

C C 73 dB

C C 73 dB

C C 73 dB

C B 73 dB