| Value | Category | Cases | |
|---|---|---|---|
| 1 | No Erosion | 214 | 
                                    
                                    66.7%
                                 | 
| 2 | Low | 68 | 
                                    
                                    21.2%
                                 | 
| 3 | Moderate | 17 | 
                                    
                                    5.3%
                                 | 
| 4 | High | 22 | 
                                    
                                    6.9%
                                 | 
| Sysmiss | 140 |