| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less then15 minutes | 22 | 
                                    
                                    68.8%
                                 | 
| 2 | 15-30 minutes | 7 | 
                                    
                                    21.9%
                                 | 
| 3 | 31-60 minutes | 2 | 
                                    
                                    6.3%
                                 | 
| 4 | 1-2 hours | 1 | 
                                    
                                    3.1%
                                 | 
| 5 | More then 2 hours | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 257 |