| Value |
Category |
| 1 |
Industrial activities |
| 2 |
Waste burning |
| 3 |
Transportation |
| 4 |
Construction |
| 5 |
Others (specify |
| 6 |
household activities (furnaces, ...) |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.