A B 69 dB

A A 71 dB

C A 73 dB

C B 74 dB

B A 71 dB

B A 75 dB

C A 74 dB

B A 70 dB

C C 72 dB

B C 75 dB

C C 72 dB

C B 73 dB

E C 74 dB

E B 70 dB

C A 72 dB

C B 73 dB

C C 73 dB

C A 73 dB

C B 73 dB

C A 73 dB