| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| concentration gradient method | 0.3 | 0.3 | 9147 | 68 | 29 |
| concentration | 0.32 | 0.3 | 8252 | 63 | 13 |
| gradient | 1.73 | 1 | 7656 | 98 | 8 |
| method | 0.69 | 0.9 | 1390 | 81 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| concentration gradient method | 0.24 | 1 | 7446 | 92 |
