| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 192 | 
                                    
                                    67.1%
                                 | 
| 1 | On duty | 73 | 
                                    
                                    25.5%
                                 | 
| 2 | On call | 21 | 
                                    
                                    7.3%
                                 | 
| Sysmiss | 982 |