Value | Category | Cases | |
---|---|---|---|
1 | boiling | 18 |
1.1%
|
2 | chlorination | 208 |
13.3%
|
3 | chlorination filter | 2 |
0.1%
|
4 | filter | 369 |
23.5%
|
5 | filter safe | 2 |
0.1%
|
6 | none | 130 |
8.3%
|
7 | other | 11 |
0.7%
|
8 | safe | 539 |
34.4%
|
Missing value | 290 |
18.5%
|