| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 168 | 
                                    
                                    38.4%
                                 | 
| 1 | On duty | 96 | 
                                    
                                    22%
                                 | 
| 2 | On call | 173 | 
                                    
                                    39.6%
                                 | 
| Sysmiss | 831 |