| Season | PM10 concentration | % Frequency |
| June-September 2012 | >100 | 27 |
| 50 - 100 | 50 | |
| Less than 50 | 23 | |
| October-January | More 500 | 1.5 |
| 200 - 500 | 3 | |
| 100 - 200 | 6 | |
| 50 - 100 | 57.5 | |
| Less than 50 | 33 | |
| More 200 | 8.5 | |
| Feb-March | 100 - 200 | 18.5 |
| 50 - 100 | 46 | |
| Less than 50 | 27 | |
| More 200 | 4 | |
| June-October | 100 - 200 | 16 |
| 50 - 100 | 37 | |
| Less than 50 | 42 |