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