| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 281 | 
                                    
                                    85.4%
                                 | 
| 1 | On duty | 22 | 
                                    
                                    6.7%
                                 | 
| 2 | On call | 26 | 
                                    
                                    7.9%
                                 | 
| Sysmiss | 939 |