| Value | Category | Cases | |
|---|---|---|---|
| 0 | 35 | 
                                                                 
                                    
                                    13.2%
                                 
                                                             | 
                                                        
                    |
| 1 | Plastic containers | 107 | 
                                                                 
                                    
                                    40.4%
                                 
                                                             | 
                                                        
                    
| 2 | Stanlice tanks | 86 | 
                                                                 
                                    
                                    32.5%
                                 
                                                             | 
                                                        
                    
| 3 | both | 37 | 
                                                                 
                                    
                                    14%
                                 
                                                             | 
                                                        
                    
| 4 | other | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             |