C A 72 dB

A A 72 dB

D C 70 dB

D C 70 dB

C A 72 dB

A A 69 dB

A A 70 dB

D C 71 dB

B B 72 dB

B A 71 dB

D A 72 dB

C A 72 dB

C A 72 dB

C A 72 dB

C A 71 dB

D B 71 dB