19"

B B 71 dB

B B 72 dB

B A 70 dB

B A 70 dB

B A 71 dB

A B 72 dB

A A 69 dB

D A 72 dB

B B 71 dB

C E 72 dB

D B 71 dB

A B 69 dB

A C 71 dB

A A 69 dB

D C 72 dB

A A 69 dB

B A 72 dB

C A 70 dB

B B 72 dB

B B 71 dB

A B 70 dB

B A 70 dB