| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 219 | 
                                    
                                    39.3%
                                 | 
| 1 | On duty | 192 | 
                                    
                                    34.5%
                                 | 
| 2 | On call | 146 | 
                                    
                                    26.2%
                                 | 
| Sysmiss | 711 |