| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| what are criteria air pollutants | 0.3 | 0.2 | 8937 | 24 | 32 |
| what | 0.95 | 0.8 | 4608 | 1 | 4 |
| are | 1.86 | 0.8 | 9136 | 57 | 3 |
| criteria | 1.08 | 0.3 | 4619 | 18 | 8 |
| air | 1.8 | 0.9 | 4592 | 68 | 3 |
| pollutants | 1.48 | 0.7 | 562 | 13 | 10 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what are criteria air pollutants | 1.03 | 1 | 6302 | 7 |
