| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Industrial activities | 23 | 23 |
0.8%
|
| 2 | Waste burning | 75 | 64 |
2.3%
|
| 3 | Transportation | 39 | 36 |
1.3%
|
| 4 | Construction | 6 | 5 |
0.2%
|
| 5 | Other/specify | 45 | 41 |
1.5%
|
| Sysmiss | 2570 | 2589 |