| Value | Category | Cases | |
|---|---|---|---|
| 1 | Surface | 174 |
82.5%
|
| 2 | Drip | 10 |
4.7%
|
| 3 | Sprinklers | 3 |
1.4%
|
| 4 | Traditional | 24 |
11.4%
|
| Sysmiss | 808 |