C
C
67 dB
E
E
C
A
70 dB
D
D
71 dB
D
C
71 dB
C
B
C
A
C
C
72 dB
E
C
71 dB
C
C
7 dB
E
C
D
D
71 dB
C
C
C
B
69 dB
C
C
70 dB
B
A
6 dB
E
D
72 dB
C
E
D
C
73 dB
B
A
C
A
E
E
C
C
70 dB