| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | The establishment does not use water for production | 5 |
13.9%
|
| 1 | Yes | 4 |
11.1%
|
| 2 | No | 27 |
75%
|
| Sysmiss | 214 |