| Value | Category | Cases | |
|---|---|---|---|
| 0 | 86 | 
                                    
                                    21.5%
                                 | |
| 30 | 82 | 
                                    
                                    20.5%
                                 | |
| 60 | 71 | 
                                    
                                    17.8%
                                 | |
| 90 | 31 | 
                                    
                                    7.8%
                                 | |
| 120 | 55 | 
                                    
                                    13.8%
                                 | |
| 150 | 11 | 
                                    
                                    2.8%
                                 | |
| 180 | 28 | 
                                    
                                    7%
                                 | |
| 210 | 36 | 
                                    
                                    9%
                                 |