| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 25 | 
                                    
                                    2.3%
                                 | 
| 1 | On duty | 656 | 
                                    
                                    60%
                                 | 
| 2 | On call | 413 | 
                                    
                                    37.8%
                                 | 
| Sysmiss | 174 |