| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 21 | 
                                                                 
                                    
                                    6.2%
                                 
                                                             | 
                                                        
                    
| -7 | None of the above (spontaneous) | 43 | 
                                                                 
                                    
                                    12.6%
                                 
                                                             | 
                                                        
                    
| 1 | Heating and cooling improvements | 63 | 
                                                                 
                                    
                                    18.5%
                                 
                                                             | 
                                                        
                    
| 2 | More climate-friendly energy generation on site | 3 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    
| 3 | Machinery and equipment upgrades | 81 | 
                                                                 
                                    
                                    23.8%
                                 
                                                             | 
                                                        
                    
| 4 | Energy management | 9 | 
                                                                 
                                    
                                    2.6%
                                 
                                                             | 
                                                        
                    
| 5 | Waste minimization, recycling and waste management | 24 | 
                                                                 
                                    
                                    7.1%
                                 
                                                             | 
                                                        
                    
| 6 | Air pollution control measures | 10 | 
                                                                 
                                    
                                    2.9%
                                 
                                                             | 
                                                        
                    
| 7 | Water management | 4 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    
| 8 | Upgrade of vehicles | 46 | 
                                                                 
                                    
                                    13.5%
                                 
                                                             | 
                                                        
                    
| 9 | Improvements to lighting system | 33 | 
                                                                 
                                    
                                    9.7%
                                 
                                                             | 
                                                        
                    
| 10 | Other pollution control measures | 3 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 241 |