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