| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Traffic | 19 | 21 |
0.8%
|
| 2 | Planes | 5 | 6 |
0.2%
|
| 3 | Queries and stone cutting | 2 | 2 |
0.1%
|
| 4 | Construction | 9 | 10 |
0.4%
|
| 5 | Industrial activities | 42 | 49 |
1.8%
|
| 6 | Others | 96 | 109 |
4%
|
| Sysmiss | 2541 | 2517 |