C
B
E
D
C
C
72 dB
D
B
71 dB
D
C
69 dB
B
D
C
72 dB
C
C
C
B
72 dB
C
E
D
C
D
72 dB
C
C
72 dB
C
B
72 dB
D
C
70 dB
C
E
C
B
B
C
E
C
D
C
72 dB
C
B
72 dB
C
C
70 dB