| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| historical usgs quad maps | 0.7 | 0.9 | 7346 | 75 | 25 |
| historical | 0.95 | 0.3 | 8548 | 75 | 10 |
| usgs | 0.13 | 0.2 | 6474 | 78 | 4 |
| quad | 0.29 | 1 | 9770 | 57 | 4 |
| maps | 0.17 | 0.1 | 6341 | 31 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| historical usgs quad maps | 1.35 | 0.8 | 8024 | 44 |
