18"

C A 72 dB

D C 71 dB

C A 69 dB

C C 71 dB

C D 72 dB

C A 70 dB

C E 70 dB

C A 73 dB

C E 72 dB

C C 73 dB

C C 73 dB

B A 72 dB

D D 73 dB

D D 72 dB