| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 488 | 
                                    
                                    52.5%
                                 | 
| 1 | On duty | 241 | 
                                    
                                    25.9%
                                 | 
| 2 | On call | 201 | 
                                    
                                    21.6%
                                 | 
| Sysmiss | 338 |