| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 232 | 
                                    
                                    40.6%
                                 | 
| 1 | On duty | 144 | 
                                    
                                    25.2%
                                 | 
| 2 | On call | 195 | 
                                    
                                    34.2%
                                 | 
| Sysmiss | 697 |