| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| major source definition clean air act | 0.7 | 0.9 | 2164 | 33 | 37 |
| major | 0.55 | 0.6 | 4936 | 21 | 5 |
| source | 0.9 | 0.9 | 4492 | 64 | 6 |
| definition | 1.51 | 0.2 | 7893 | 45 | 10 |
| clean | 1.5 | 0.8 | 6372 | 18 | 5 |
| air | 1.07 | 0.2 | 1366 | 49 | 3 |
| act | 1.87 | 0.3 | 6407 | 94 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| major source definition clean air act | 1.39 | 0.2 | 1093 | 33 |
