| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 196 | 
                                    
                                    75.1%
                                 | 
| 1 | On duty | 54 | 
                                    
                                    20.7%
                                 | 
| 2 | On call | 11 | 
                                    
                                    4.2%
                                 | 
| Sysmiss | 1007 |