19"

B A 70 dB

E B 73 dB

D B 71 dB

D B 72 dB

D A 72 dB

D A 72 dB

C D 71 dB

B A 69 dB

E C 73 dB

C F 72 dB

C E 71 dB

D E 71 dB

C A 69 dB

C E 72 dB

D B 72 dB

B A 69 dB

D A 71 dB

D A 72 dB