18"

C B 72 dB

C C 68 dB

C B 71 dB

C A 70 dB

B A 72 dB

C C 69 dB

C A 72 dB

C A 70 dB

B A 71 dB

E E 72 dB

B A 68 dB

C B 68 dB

B A 72 dB

A B 70 dB

C A 70 dB

C B 70 dB

C B 70 dB

C C 70 dB

C D 73 dB

B B 71 dB

B A 70 dB