| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 1 | Human activity, like cutting down forests, or burning fuel and other activities that pollute the atmosphere | 209 | 
                                    
                                    17.4%
                                 | 
| 2 | Natural weather patterns or natural processes | 129 | 
                                    
                                    10.8%
                                 | 
| 3 | Both human activity and natural processes | 98 | 
                                    
                                    8.2%
                                 | 
| 4 | Some other reason | 7 | 
                                    
                                    0.6%
                                 | 
| 5 | None of these | 0 | 
                                    
                                    0%
                                 | 
| 7 | Not applicable | 749 | 
                                    
                                    62.4%
                                 | 
| 8 | Refused to Answer | 0 | 
                                    
                                    0%
                                 | 
| 9 | Don’t know / Haven’t heard enough | 8 | 
                                    
                                    0.7%
                                 |