| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| sampling systems for gaseous pollutants | 1.41 | 0.9 | 4907 | 99 | 39 |
| sampling | 0.58 | 0.1 | 6770 | 23 | 8 |
| systems | 0.55 | 0.1 | 7045 | 49 | 7 |
| for | 0.41 | 0.6 | 6975 | 99 | 3 |
| gaseous | 0.48 | 0.3 | 2555 | 59 | 7 |
| pollutants | 1.89 | 0.9 | 9528 | 73 | 10 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| sampling systems for gaseous pollutants | 1.51 | 0.1 | 2997 | 5 |
