Table 5 Shielding rate and particular matter reduction rate by measured date (%)
Park Num. | Space Shielding Rate | 2019-05-14 Reduction Rate | 2019-05-16 Reduction Rate | 2019-05-24 Reduction Rate | Total Average Reduction Rate |
PM1 | PM2.5 | PM10 | PM1 | PM2.5 | PM10 | PM1 | PM2.5 | PM10 | PM1 | PM2.5 | PM10 |
1 | 97.37 | 18.33 | 31.96 | 20.41 | 22.86 | 10.42 | 6.67 | 12.12 | 4.76 | 6.98 | 17.77 | 15.71 | 11.35 |
2 | 92.49 | 27.66 | 16.9 | 15.49 | 11.11 | 9.30 | 11.63 | 17.65 | 14.71 | 10.00 | 18.81 | 13.64 | 12.37 |
3 | 98.91 | 18.18 | 10.81 | 11.54 | 6.67 | 18.37 | 11.11 | 13.33 | 24.44 | 31.91 | 12.73 | 17.87 | 18.19 |
4 | 98.95 | 25.71 | 36.92 | 30.77 | 22.50 | 20.69 | 10.53 | 33.57 | 33.33 | 13.04 | 27.26 | 30.31 | 18.11 |
5 | 99.66 | 12.12 | 17.65 | 16.67 | 13.16 | 9.09 | 8.33 | 10.71 | 12.50 | 15.00 | 12.00 | 13.08 | 13.33 |
6 | 85.48 | 11.77 | 22.97 | 17.86 | 5.88 | 8.77 | 8.06 | 11.76 | 18.60 | 11.36 | 9.80 | 16.78 | 12.43 |
7 | 98.02 | 34.48 | 38.1 | 40.43 | 5.71 | 1.89 | 7.27 | 23.53 | 14.71 | 9.76 | 21.24 | 18.23 | 19.15 |
Ave. | 95.84 | 21.18 | 25.04 | 21.88 | 12.56 | 11.22 | 9.09 | 17.53 | 17.58 | 14.01 | 17.09 | 17.95 | 14.99 |
Std. | 5.15 | 8.44 | 10.70 | 10.13 | 7.46 | 6.36 | 1.97 | 8.37 | 9.16 | 8.30 | 6.08 | 5.80 | 3.33 |