| Value | Category | Cases | |
|---|---|---|---|
| 6 | Junio | 176 | 
                                    
                                    17.5%
                                 | 
| 7 | Julio | 179 | 
                                    
                                    17.8%
                                 | 
| Sysmiss | 649 | 
                                    
                                    64.6%
                                 |