| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 189 | 
                                    
                                    57.4%
                                 | 
| 1 | On duty | 137 | 
                                    
                                    41.6%
                                 | 
| 2 | On call | 3 | 
                                    
                                    0.9%
                                 | 
| Sysmiss | 939 |