| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| nox effects on environment | 1.47 | 0.6 | 110 | 37 | 26 |
| nox | 1.49 | 0.9 | 4570 | 16 | 3 |
| effects | 1.97 | 0.3 | 2814 | 95 | 7 |
| on | 1.04 | 0.2 | 8260 | 79 | 2 |
| environment | 1.4 | 0.5 | 8063 | 76 | 11 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| nox effects on environment | 0.97 | 0.9 | 573 | 25 |
