24-hour TSP Monitoring Results at Station SR77
(Yuen Leng 2)
Sampling Date Wt. of paper (g) Elapse Time Flow Rate (CFM) Total Volume
(m³)
TSP Concentration
(¦Ìg/m3)
Weather
Initial Wt. Final Wt. Wt. of dust Initial Final Sampling Hour Initial Final Avg Flow Rate
2019-05-10 2.6512 2.7551 0.1039 62.67 86.67 24.00 51 51 51.0 2079.59 50.0 Sunny
2019-05-16 *No data was provided, due to the eletricity supply was suspended.
2019-05-22 - - - - 24.00 24.00 51 51 51.0 2079.59 67.2 Sunny
2019-05-28 - - - - 24.00 24.00 51 51 51.0 2079.59 71.2 Sunny
Note: 
The electricity supply of HVS at AM1(SR77) was suspended from 16 May 2019 and was no longer available. In order to have a more secure electricity supply, an alternative Handheld TSP meter was proposed to use for the temporary monitoring  of 24-hr & 1hr air quality from 22 May 2019.