C
A
69 dB
B
A
D
B
71 dB
B
A
69 dB
B
A
69 dB
B
A
69 dB
B
A
71 dB
D
A
71 dB
C
A
70 dB
D
A
72 dB
A
B
71 dB
B
A
B
A
A
B
B
B
C
C
A
D
B
69 dB
C
B
B
B
D
B
68 dB
B
C
69 dB