| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very weak | 34 | 
                                                                 
                                    
                                    2.2%
                                 
                                                             | 
                                                        
                    
| 2 | Weak | 161 | 
                                                                 
                                    
                                    10.5%
                                 
                                                             | 
                                                        
                    
| 3 | Average | 676 | 
                                                                 
                                    
                                    43.9%
                                 
                                                             | 
                                                        
                    
| 4 | High | 600 | 
                                                                 
                                    
                                    39%
                                 
                                                             | 
                                                        
                    
| 5 | Very high | 68 | 
                                                                 
                                    
                                    4.4%
                                 
                                                             |