C
C
70 dB
C
B
70 dB
C
B
70 dB
C
A
70 dB
C
A
70 dB
C
A
C
C
B
68 dB
D
C
69 dB
D
A
70 dB
C
A
70 dB
C
B
70 dB
E
C
C
B
69 dB
D
C
69 dB
C
A
70 dB
D
B
70 dB
C
B
68 dB
C
A
C
D
A
70 dB
C
A
D
C
68 dB