Value |
Category |
1 |
Pas de traitement |
2 |
Ebullition |
3 |
Ajout de chlore |
4 |
Ajout d'iode |
7 |
Autre |
9 |
|
Sysmiss |
|
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.