| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very weak | 35 | 
                                                                 
                                    
                                    2.3%
                                 
                                                             | 
                                                        
                    
| 2 | Weak | 196 | 
                                                                 
                                    
                                    12.7%
                                 
                                                             | 
                                                        
                    
| 3 | Average | 665 | 
                                                                 
                                    
                                    43.2%
                                 
                                                             | 
                                                        
                    
| 4 | High | 553 | 
                                                                 
                                    
                                    35.9%
                                 
                                                             | 
                                                        
                    
| 5 | Very high | 90 | 
                                                                 
                                    
                                    5.8%
                                 
                                                             |