| Value | Category | Cases | |
|---|---|---|---|
| 1 | bucket | 57 |
63.3%
|
| 2 | polytank | 10 |
11.1%
|
| 3 | direct from source | 10 |
11.1%
|
| 4 | other (specify) | 13 |
14.4%
|
| Sysmiss | 199 |