| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 178 | 
                                    
                                    54.8%
                                 | 
| 1 | On duty | 69 | 
                                    
                                    21.2%
                                 | 
| 2 | On call | 78 | 
                                    
                                    24%
                                 | 
| Sysmiss | 943 |