19"

C C 72 dB

D B 70 dB

C B 72 dB

C A 75 dB

C B 71 dB

D A 75 dB

D A 73 dB

C C 73 dB

C A 71 dB

B A 72 dB

C A 73 dB

C B 73 dB

C C 71 dB

D B 71 dB

B D 71 dB

A D 70 dB

C C 72 dB

D B 73 dB

C C 72 dB

C A 72 dB

D B 72 dB

D A 75 dB

C A 73 dB

D A 75 dB