C A 72 dB

D B 74 dB

C B 73 dB

D B 74 dB

C B 68 dB

C B 68 dB

D B 69 dB

D A 73 dB

B A 71 dB

B A 71 dB

C A 71 dB

C A 71 dB

C A 71 dB

C A 72 dB

C A 71 dB

F F 73 dB

E F 74 dB

E C 72 dB