20"

A D 69 dB

C A 73 dB

C C 72 dB

C B 71 dB

C E 71 dB

B B 70 dB

B B 71 dB

C B 74 dB

C B 72 dB

C B 72 dB

B B 73 dB

B A 72 dB

C C 69 dB

C A 73 dB

C B 73 dB

B A 70 dB

B A 71 dB

C A 75 dB

D B 71 dB

C A 72 dB

B B 71 dB

B B 72 dB

C E 73 dB