| 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 | |||||||||||||