19"

D A 72 dB

C B 72 dB

B A 70 dB

C D 72 dB

D A 72 dB

B D 70 dB

C A 75 dB

B A 71 dB

C D 70 dB

C A 71 dB

C A 72 dB

D C 74 dB

D A 71 dB

B D 69 dB

D E 72 dB

D E 71 dB

D A 71 dB

D A 74 dB

B D 72 dB

C D 72 dB