| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| six criteria air pollutants | 1.47 | 0.7 | 1161 | 58 | 27 |
| six | 1.17 | 0.5 | 2331 | 16 | 3 |
| criteria | 1.43 | 0.4 | 2885 | 81 | 8 |
| air | 1.38 | 0.4 | 4451 | 71 | 3 |
| pollutants | 0.06 | 0.5 | 175 | 26 | 10 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| six criteria air pollutants | 1.33 | 0.5 | 6237 | 97 |
