Table 3.
Mean ambient conditions for the 24-h prior to treatment.
| Treatment | Number of Days | PM2.5, μg/m3 | Temperature, °C | Relative Humidity, % |
|---|---|---|---|---|
| All | 81 | 7 ± 4 (1, 19) | 10 ± 7 (− 8, 24) | 49 ± 14 (23, 81) |
| Control | 15 | 5 ± 3 (2, 13) | 7 ± 6 (− 7, 20) | 56 ± 13 (27, 80) |
| LPG | 13 | 8 ± 5 (3, 19) | 11 ± 5 (3, 24) | 47 ± 11 (29, 67) |
| Gasifier | 13 | 5 ± 3 (1, 11) | 7 ± 7 (− 6, 14) | 50 ± 12 (32, 69) |
| Fan rocket | 14 | 9 ± 4 (2, 18)** | 16 ± 6** (5, 23) | 42 ± 13 (23, 69) ** |
| Rocket elbow | 14 | 6 ± 2 (3, 9) | 13 ± 10 (− 8, 24) | 44 ± 13 (27, 67) |
| Three stone fire | 12 | 6 ± 3 (1, 12) | 7 ± 5 (− 3, 15) | 56 ± 14 (40, 81) |
Ambient parameter values are presented as Mean ± S.D. (Minimum, Maximum). Abbreviations: S.D. = standard deviation; PM2.5 = fine particulate matter (particles of <2.5 μm diameter); LPG = liquified petroleum gas.
Kruskal-Wallis rank sum testing outcome; significantly different value compared to values of other treatments:
*
p < 0.05
**
p < 0.01.