| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 115 | 
                                    
                                    16.9%
                                 | 
| 1 | On duty | 557 | 
                                    
                                    82%
                                 | 
| 2 | On call | 7 | 
                                    
                                    1%
                                 | 
| Sysmiss | 589 |