19"

B B 71 dB

C A 71 dB

C B 72 dB

C A 73 dB

C B 72 dB

C A 73 dB

D A 71 dB

D A 73 dB

D C 71 dB

C A 71 dB

C D 70 dB

C D 71 dB

B A 69 dB

D D 71 dB

C D 72 dB

B D 71 dB

B A 71 dB

C A 72 dB

C A 71 dB

C A 71 dB

D A 72 dB

C A 73 dB