A A 70 dB

C A 71 dB

C A 71 dB

B B 71 dB

C A 72 dB

C A 72 dB

C A

A B 70 dB

C C 73 dB

C C 73 dB

B B 69 dB

B B 69 dB

B A 72 dB

B A 70 dB

B A 72 dB

C A

A A 71 dB

C C 73 dB

B B 72 dB

B B 72 dB