B B 72 dB

D A 73 dB

C A 70 dB

C A 71 dB

B B 69 dB

C A 71 dB

D A 71 dB

D A 71 dB

C B 71 dB

C A 71 dB

D A 72 dB

B B 72 dB

C B 72 dB

C A 70 dB

D C 70 dB

C A 71 dB

D A 68 dB