19"

B E 70 dB

D A 74 dB

B B 72 dB

A B 70 dB

A B 72 dB

B A 70 dB

C D 72 dB

C B 71 dB

B A 70 dB

A A 70 dB

C C 72 dB

C A 70 dB

C A 71 dB

B A 70 dB

C A 70 dB

D C 72 dB

B E 73 dB

B B 70 dB

C E 69 dB

C A 70 dB

C B 70 dB