| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not used very often, or used for a small part of the area irrigated | 4 | 
                                    
                                    1%
                                 | 
| 2 | Used for a significant part of the area irrigated | 7 | 
                                    
                                    1.8%
                                 | 
| 3 | Main irrigation method used | 374 | 
                                    
                                    97.1%
                                 | 
| Sysmiss | 5270 |