| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 minutes | 5392 | 
                                    
                                    58.7%
                                 | 
| 2 | 30 minutes to 1 hour | 1752 | 
                                    
                                    19.1%
                                 | 
| 3 | 1 - 5 Hours | 1865 | 
                                    
                                    20.3%
                                 | 
| 4 | More than 5 Hours | 170 | 
                                    
                                    1.9%
                                 | 
| Sysmiss | 296 |