| Value | Category | Cases | |
|---|---|---|---|
| 1 | Traffic | 605 |
23.2%
|
| 2 | Planes | 2 |
0.1%
|
| 3 | Queries and stone cutting | 8 |
0.3%
|
| 4 | Construction | 16 |
0.6%
|
| 5 | Industrial activities | 50 |
1.9%
|
| 6 | Others | 113 |
4.3%
|
| Sysmiss | 1818 |