20"

B D 71 dB

C D 71 dB

C C 71 dB

C A 73 dB

D D 74 dB

C B 72 dB

B B 72 dB

D D 71 dB

F E 71 dB

F E 71 dB

C A 71 dB

E C 72 dB

F E 72 dB

B B 72 dB

F E 72 dB

B A 69 dB

C B 73 dB

C A 72 dB

D A 71 dB