| Value | Category | Cases | |
|---|---|---|---|
| 0 | Phnom Penh and urban areas | 53 | 
                                    
                                    6.6%
                                 | 
| 1 | Plain | 275 | 
                                    
                                    34.3%
                                 | 
| 2 | Tonle Sap | 300 | 
                                    
                                    37.5%
                                 | 
| 3 | Coastal | 38 | 
                                    
                                    4.7%
                                 | 
| 4 | Plateau and Mountain | 135 | 
                                    
                                    16.9%
                                 |