16"

E B 71 dB

B A 70 dB

A B 71 dB

B A 69 dB

A A 72 dB

C B 70 dB

C B 72 dB

B A 69 dB

B A 71 dB

C C 70 dB

D C 73 dB

C D 73 dB

C A 71 dB

D B 72 dB

C B 70 dB

C B 70 dB

C C 70 dB

A A 67 dB

D A 71 dB

D B 69 dB