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