| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| circulation research letter | 1.03 | 0.9 | 876 | 17 | 27 |
| circulation | 1.79 | 0.1 | 1765 | 39 | 11 |
| research | 1.1 | 0.6 | 7012 | 78 | 8 |
| letter | 1.31 | 0.4 | 4530 | 9 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| circulation research letter | 0.89 | 0.6 | 7381 | 76 |
| circulation research letpub | 1.43 | 0.2 | 825 | 61 |
