| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 173 | 
                                    
                                    52.9%
                                 | 
| 1 | On duty | 129 | 
                                    
                                    39.4%
                                 | 
| 2 | On call | 25 | 
                                    
                                    7.6%
                                 | 
| Sysmiss | 941 |