| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 205 | 
                                    
                                    82.7%
                                 | 
| 1 | On duty | 13 | 
                                    
                                    5.2%
                                 | 
| 2 | On call | 30 | 
                                    
                                    12.1%
                                 | 
| Sysmiss | 1020 |