| Value | Category | Cases | |
|---|---|---|---|
| 1 | below 15 minutes | 61 | 
                                    
                                    22.6%
                                 | 
| 2 | 16-30 minutes | 83 | 
                                    
                                    30.7%
                                 | 
| 3 | 31-45 minutes | 23 | 
                                    
                                    8.5%
                                 | 
| 4 | 46-60 minutes | 35 | 
                                    
                                    13%
                                 | 
| 5 | 61-90 minutes | 19 | 
                                    
                                    7%
                                 | 
| 6 | 91-120 minutes | 13 | 
                                    
                                    4.8%
                                 | 
| 7 | above 120 minutes | 36 | 
                                    
                                    13.3%
                                 | 
| Sysmiss | 4684 |