| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 minutes | 1296 | 
                                    
                                    52%
                                 | 
| 2 | 30 minutes to 1 hour | 828 | 
                                    
                                    33.2%
                                 | 
| 3 | 1 - 5 Hours | 365 | 
                                    
                                    14.6%
                                 | 
| 4 | More than 5 Hours | 3 | 
                                    
                                    0.1%
                                 | 
| Sysmiss | 6983 |