20"

C C 73 dB

C C 73 dB

E E 71 dB

E E 72 dB

E E 75 dB

C D 72 dB

A B 69 dB

B D 69 dB

D C 73 dB

D A 71 dB

D C 72 dB

B A 72 dB

D A 72 dB

C A 71 dB

C D 73 dB

C D 73 dB

B B 69 dB

C D 75 dB

C C 72 dB

C D 75 dB

B B 70 dB