C B 75 dB

N N

D A 74 dB

D B 73 dB

C B 73 dB

C B 75 dB

C A 72 dB

D A 75 dB

C C 73 dB

C A 72 dB

C A 73 dB

B A 72 dB

C A 72 dB

C A 72 dB

C C 72 dB

C C 70 dB

C B 69 dB

C B 72 dB

C A 73 dB

B D 71 dB