18"

B D 69 dB

C A 72 dB

B A 70 dB

B E 70 dB

B B 73 dB

C A 70 dB

C D 71 dB

C E 69 dB

B D 69 dB

C D 72 dB

B D 71 dB

B E 70 dB

B E 70 dB

B E 70 dB

C A 71 dB

B B 71 dB