Table 1 Average concentration of PM10, PM2.5 and PM1 based on different seasons (concentration in µg m−3).
Inter monsoon 1 (March to May) | Southwest monsoon (end May to September) | Inter monsoon 2 (October to in the middle of November) | Northeast monsoon (November to March) | |
|---|---|---|---|---|
Putrajaya | ||||
PM10 | 30.2 ± 18.8 | 63.8 ± 45.2 | 45.7 ± 22.4 | 29.9 ± 19.8 |
PM2.5 | 27.4 ± 15.9 | 58.1 ± 44.2 | 40.3 ± 20.1 | 26.8 ± 16.8 |
PM1 | 20.5 ± 10.1 | 39.7 ± 26.4 | 28.3 ± 12.8 | 19.6 ± 11.2 |
Bukit Fraser | ||||
PM10 | 35.1 ± 21.9 | 61.0 ± 32.7 | 37.1 ± 32.5 | 24.1 ± 20.0 |
PM2.5 | 28.9 ± 12.9 | 52.9 ± 30.5 | 27.5 ± 23.9 | 18.7 ± 16.8 |
PM1 | 19.3 ± 7.40 | 31.6 ± 19.0 | 34.3 ± 13.4 | 11.5 ± 11.0 |
Kota Samarahan | ||||
PM10 | 11.7 ± 9.23 | 111 ± 92.4 | 19.5 ± 14.7 | 12.5 ± 12.0 |
PM2.5 | 11.1 ± 8.63 | 104 ± 89.2 | 18.0 ± 12.6 | 11.5 ± 11.2 |
PM1 | 8.67 ± 8.00 | 63.4 ± 48.5 | 13.1 ± 8.46 | 8.47 ± 7.10 |
Transition 1 (October to November) | Dry (December to March) | Transition 2 (April to May) | Wet (June to September) | |
|---|---|---|---|---|
Chiang Mai | ||||
PM10 | 30.5 ± 14.1 | 115 ± 75.5 | 46.4 ± 18.1 | 12.0 ± 9.25 |
PM2.5 | 27.1 ± 10.9 | 108 ± 74.5 | 39.4 ± 15.3 | 10.9 ± 8.54 |
PM1 | 19.4 ± 7.14 | 77.0 ± 47.5 | 28.9 ± 11.9 | 8.08 ± 7.12 |
