| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 233 | 
                                    
                                    27.8%
                                 | 
| 1 | On duty | 439 | 
                                    
                                    52.3%
                                 | 
| 2 | On call | 167 | 
                                    
                                    19.9%
                                 | 
| Sysmiss | 429 |