C B 73 dB

N N

D C 72 dB

N N

N N

C C 73 dB

C C 73 dB

C C 73 dB

C C 73 dB

C C 73 dB

C C 75 dB

C C 70 dB

C C 70 dB

N N

N N

C C 75 dB

N N

C C 72 dB