18"

D E 72 dB

D E 71 dB

C B 72 dB

C A 71 dB

D A 70 dB

B A 69 dB

C B 72 dB

D C 72 dB

B B 73 dB

D A 71 dB

C E 72 dB

A D 68 dB

C B 72 dB

E E 72 dB

D A 72 dB

C C 71 dB

A B 69 dB

A B 69 dB

A A 70 dB

C A 70 dB

C C 72 dB

D B 70 dB

A A 68 dB

D E 72 dB