| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Traffic | 19 | 21 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 2 | Planes | 5 | 6 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 3 | Queries and stone cutting | 2 | 2 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 4 | Construction | 9 | 10 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 5 | Industrial activities | 42 | 49 | 
                                                                 
                                    
                                    1.8%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 6 | Others | 96 | 109 | 
                                                                 
                                    
                                    4%
                                 
                                                             | 
                            
                        
                        
                            
                    
| Sysmiss | 2541 | 2517 |