19"

D E 72 dB

C A 68 dB

C A 71 dB

C A 72 dB

C B 71 dB

A A 70 dB

A B 70 dB

C A 71 dB

A B 69 dB

B B 69 dB

B C 72 dB

D A 72 dB

B A 69 dB

B A 71 dB

C A 72 dB

A A 72 dB

C A 70 dB

C B 72 dB

C A 70 dB

A B 69 dB

B A 71 dB

B B 71 dB

C B 71 dB

C B 72 dB