| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 156 | 
                                    
                                    35.6%
                                 | 
| 1 | On duty | 272 | 
                                    
                                    62.1%
                                 | 
| 2 | On call | 10 | 
                                    
                                    2.3%
                                 | 
| Sysmiss | 830 |