| Value | Category | Cases | |
|---|---|---|---|
| 1 | below 15 minutes | 108 | 
                                    
                                    39%
                                 | 
| 2 | 16-30 minutes | 73 | 
                                    
                                    26.4%
                                 | 
| 3 | 31-45 minutes | 30 | 
                                    
                                    10.8%
                                 | 
| 4 | 46-60 minutes | 32 | 
                                    
                                    11.6%
                                 | 
| 5 | 61-90 minutes | 12 | 
                                    
                                    4.3%
                                 | 
| 6 | 91-120 minutes | 8 | 
                                    
                                    2.9%
                                 | 
| 7 | above 120 minutes | 14 | 
                                    
                                    5.1%
                                 | 
| Sysmiss | 4677 |