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dB

dB

F C 69 dB

dB

C A 69 dB

C A 68 dB

C C 67 dB

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C B 72 dB

C B 69 dB

C A 69 dB

E E 69 dB

E B 71 dB

C B 71 dB

dB

C B 71 dB

dB

C A 69 dB

C C 70 dB

A 71 dB