| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| criteria air pollutants definition | 1.67 | 0.8 | 1286 | 69 | 34 |
| criteria | 1.25 | 1 | 1289 | 16 | 8 |
| air | 0.59 | 0.9 | 9888 | 38 | 3 |
| pollutants | 1.1 | 0.3 | 364 | 97 | 10 |
| definition | 1.7 | 0.5 | 2109 | 85 | 10 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| criteria air pollutants definition | 1.82 | 0.2 | 9045 | 25 |
