| Value | Category | Cases | |
|---|---|---|---|
| 1 | Gravity(valve) | 0 |
0%
|
| 2 | Discharge(pump) | 4 |
13.3%
|
| 3 | Manual scooping | 19 |
63.3%
|
| 4 | Drip | 0 |
0%
|
| 5 | Other | 1 |
3.3%
|
| 9 | 6 |
20%
|
|
| Sysmiss | 6634 |