| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 293 | 
                                    
                                    89.3%
                                 | 
| 1 | On duty | 15 | 
                                    
                                    4.6%
                                 | 
| 2 | On call | 20 | 
                                    
                                    6.1%
                                 | 
| Sysmiss | 940 |