| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| special issue cover letter | 0.78 | 0.9 | 7765 | 92 | 26 |
| special | 1.37 | 0.2 | 9256 | 99 | 7 |
| issue | 1.93 | 0.3 | 4532 | 77 | 5 |
| cover | 0.06 | 1 | 1573 | 82 | 5 |
| letter | 1.78 | 1 | 214 | 82 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| special issue cover letter | 1.53 | 0.5 | 4226 | 87 |
