| Value | Category | Cases | |
|---|---|---|---|
| 1 | Construction works | 18 |
0.6%
|
| 2 | Traffic | 75 |
2.5%
|
| 3 | Industrial activities | 40 |
1.3%
|
| 4 | Burning garbage | 94 |
3.1%
|
| 5 | Waste water | 0 |
0%
|
| 6 | Other | 36 |
1.2%
|
| Sysmiss | 2739 |