G
E
F
B
C
A
72 dB
C
A
70 dB
C
A
70 dB
D
B
72 dB
E
A
C
A
71 dB
C
A
C
C
B
B
C
B
70 dB
B
B
E
C
70 dB
E
B
C
B
69 dB
C
C
D
B
70 dB
C
B
70 dB
D
A
70 dB