C
A
69 dB
B
A
69 dB
C
A
A
C
C
A
C
A
67 dB
D
B
70 dB
B
C
A
67 dB
C
A
67 dB
D
A
69 dB
D
B
75 dB
C
A
70 dB
B
A
D
B
73 dB
C
A
67 dB
C
A
67 dB
B
A
D
A
67 dB
C
A
71 dB
C
A
67 dB
B
B
69 dB
C
A
69 dB