20"

D D 71 dB

C B 71 dB

D A 73 dB

D A 73 dB

D A 74 dB

C B 71 dB

B B 73 dB

C B 72 dB

A B 69 dB

A C 72 dB

D B 73 dB

C A 73 dB

C B 73 dB

C C 70 dB

C E 72 dB

E E 73 dB

D B 73 dB

B B 72 dB

C A 73 dB

D A 75 dB

B C 72 dB