| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 197 | 
                                    
                                    31.3%
                                 | 
| 1 | On duty | 137 | 
                                    
                                    21.7%
                                 | 
| 2 | On call | 296 | 
                                    
                                    47%
                                 | 
| Sysmiss | 638 |