16"

C D 71 dB

C A 70 dB

D C 73 dB

B A 71 dB

B A 71 dB

D A 72 dB

B A 70 dB

C A 71 dB

C A 73 dB

C C 73 dB

D C 72 dB

B D 71 dB

C D 73 dB

C B 71 dB

C C 73 dB

C B 72 dB