| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| concentration gradient unit | 0.39 | 0.9 | 264 | 20 | 27 |
| concentration | 1.89 | 0.7 | 1837 | 11 | 13 |
| gradient | 1.44 | 0.6 | 1459 | 16 | 8 |
| unit | 1.27 | 0.9 | 4912 | 54 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| concentration gradient units | 0.09 | 0.4 | 6368 | 31 |
| unit of concentration gradient | 0.36 | 0.3 | 6635 | 33 |
