| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 170 | 
                                    
                                    39.1%
                                 | 
| 1 | On duty | 84 | 
                                    
                                    19.3%
                                 | 
| 2 | On call | 181 | 
                                    
                                    41.6%
                                 | 
| Sysmiss | 833 |