Restricted Hours Noise Monitoring Results [1]                
                           
Station NM1                        
Date Start Time End Time  Weather Noise level (dB(A)), 5 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
02-Jan-11 15:44 15:49 Cloudy 68 69 67 Noise from nearby playgroud Traffic noise - 15 0.6 RION- NL31 (S/N 00983400) RION - NC73 (S/N 10997142)
15:49 15:54 Cloudy 71 71 70 -
15:54 15:59 Cloudy 63 63 63 -
15:44 15:59 Cloudy 68 69 67 Average results during 15 min monitoring
07-Jan-11 23:00 23:05 Fine 64 65 57 - Mainly traffic noise - 11 0.8 RION- NL31 (S/N 00983400) RION - NC73 (S/N 10997142)
23:05 23:10 Fine 62 64 57 -
23:10 23:15 Fine 64 65 56 -
23:00 23:15 Fine 63 65 57 Average results during 15 min monitoring
16-Jan-11 11:35 11:40 Sunny 67 69 61 Noise from nearby playgroud Traffic noise - 11 1.6 RION- NL31 (S/N 00983400) RION - NC73 (S/N 10997142)
11:40 11:45 Sunny 65 68 61 -
11:45 11:50 Sunny 67 69 61 -
11:35 11:50 Sunny 67 69 61 Average results during 15 min monitoring
21-Jan-11 23:00 23:05 Fine 63 64 58 - Mainly traffic noise - 14 0.5 RION- NL31 (S/N 00410224) RION - NC73 (S/N 10997142)
23:05 23:10 Fine 62 64 59 -
23:10 23:15 Fine 60 62 57 -
23:00 23:15 Fine 62 63 58 Average results during 15 min monitoring
30-Jan-11 11:35 11:40 Sunny 67 69 61 - Traffic noise, passer-by and nearby playground - 12 0.5 RION- NL31 (S/N 00410224) RION - NC73 (S/N 10997142)
11:40 11:45 Sunny 66 69 61 -
11:45 11:50 Sunny 67 68 62 -
11:35 11:50 Sunny 67 69 61 Average results during 15 min monitoring
      Min. 60                  
      Max. 71                  
                           
[1] No class was held at the school during the measurement period on 2, 7, 16, 21 and 30 January 2011.