C
C
E
C
C
C
69 dB
C
B
71 dB
C
B
E
C
C
B
71 dB
E
C
C
C
C
C
C
B
71 dB
C
B
C
B
71 dB
C
B
71 dB
C
B
71 dB
C
B
E
C
C
C
E
C
C
B
C
C
C
B
C
C
C
B
71 dB