| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| history of landfill gas | 0.1 | 0.3 | 6186 | 64 | 23 |
| history | 0.6 | 0.2 | 2441 | 78 | 7 |
| of | 1.68 | 0.2 | 2661 | 23 | 2 |
| landfill | 0.71 | 0.8 | 2421 | 35 | 8 |
| gas | 0.44 | 0.2 | 9490 | 7 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| history of landfill gas | 1.44 | 0.1 | 4175 | 75 |
