20"

D A 71 dB

C E 69 dB

B D 72 dB

C B 73 dB

A B 70 dB

E C 73 dB

C D 72 dB

C E 72 dB

C E 70 dB

B E 69 dB

C A 70 dB

D A 73 dB

B B 68 dB

B B 73 dB

C A 73 dB

C E 71 dB

A B 73 dB

C E 71 dB

C D 70 dB

B E 71 dB

D A 71 dB