| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 2 | 
                                    
                                    8.3%
                                 | 
| 1 | less than one minute | 1 | 
                                    
                                    4.2%
                                 | 
| 3 | 2 | 
                                    
                                    8.3%
                                 | |
| 4 | 1 | 
                                    
                                    4.2%
                                 | |
| 5 | 1 | 
                                    
                                    4.2%
                                 | |
| 7 | 1 | 
                                    
                                    4.2%
                                 | |
| 15 | 1 | 
                                    
                                    4.2%
                                 | |
| 30 | 3 | 
                                    
                                    12.5%
                                 | |
| 60 | 4 | 
                                    
                                    16.7%
                                 | |
| 90 | 1 | 
                                    
                                    4.2%
                                 | |
| 120 | 2 | 
                                    
                                    8.3%
                                 | |
| 150 | 1 | 
                                    
                                    4.2%
                                 | |
| 200 | 1 | 
                                    
                                    4.2%
                                 | |
| 300 | 1 | 
                                    
                                    4.2%
                                 | |
| 360 | 1 | 
                                    
                                    4.2%
                                 | |
| 900 | 1 | 
                                    
                                    4.2%
                                 | |
| Sysmiss | 931 |