19"

A B 71 dB

C C 69 dB

D B 71 dB

B B 72 dB

C A 72 dB

D B 71 dB

A B 70 dB

B A 72 dB

B B 71 dB

B A 72 dB

C A 72 dB

B A 71 dB

B A 70 dB

B A 69 dB

C A 72 dB

C A 72 dB

B A 70 dB

A B 69 dB

C A 70 dB

B B 70 dB

B B 72 dB

B A 67 dB

A C 73 dB

C A 70 dB