| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 615 | 
                                    
                                    66.1%
                                 | 
| 1 | On duty | 85 | 
                                    
                                    9.1%
                                 | 
| 2 | On call | 230 | 
                                    
                                    24.7%
                                 | 
| Sysmiss | 338 |