| Value | Category | Cases | |
|---|---|---|---|
| 1 | flooding the area | 24 |
44.4%
|
| 2 | dispersing drop by drop to the base of the plant | 16 |
29.6%
|
| 3 | other. specify 1: | 14 |
25.9%
|
| Sysmiss | 652 |