Restricted Hours Noise Monitoring Results -- Night time           
                 
Station M3, Kwa Yick Building                    
Date Start Time End Time  Weather Noise level (dB(A)), 15 min Major Construction Noise Source(s) Observed Other Noise Source(s) Observed Remarks Temp. (°C) Wind Speed (m/s) Noise Meter Model / ID Calibrator Model / ID
Leq L10 L90
03-Jan-12 23:00 23:15 Fine 65 66 63 No outdoor construction noise Mainly traffic noise - 18.0 0.8 RION- NL31 (S/N 00603867) RION - NC73 (S/N 10997142)
17-Jan-12 23:00 23:15 Fine 63 65 61 No outdoor construction noise Mainly traffic noise - 15.0 1.0 RION- NL31 (S/N 00603867) RION - NC73 (S/N 10997142)
27-Jan-12 23:00 23:15 Fine 67 68 64 No major construction works Road traffic noise from Western Harbour Crossing, engine of turbojet  - 14.7 <5 B&K 2238   S/N: 2684502 B&K 4231   S/N: 2656516
31-Jan-12 23:00 23:15 Fine 63 64 60 No outdoor construction noise Mainly traffic noise - 15.0 1.2 RION- NL31 (S/N 00603867) RION - NC73 (S/N 10997142)
      Min. 63        
      Max. 67        
The data (M3_Night Time) of 3, 17 and 31 Jan were provided by Contract No. DC/2007/23. Calibration certificates for the noise meter(s) and calibrator(s) used were included in the corresponding Monthly EM&A Report for this Contract