C A 72 dB

A A 70 dB

C D 75 dB

B A 72 dB

B A 69 dB

B A 72 dB

B A 72 dB

C B 70 dB

A A 70 dB

B A 69 dB

E E 72 dB

E E 72 dB

E E 72 dB

E E 72 dB

C C 72 dB

N N

D A 72 dB

D B 72 dB

C B 72 dB

D B 72 dB