| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| usgs historic topographic maps | 0.16 | 0.4 | 6850 | 22 | 30 |
| usgs | 1.23 | 0.8 | 8280 | 22 | 4 |
| historic | 1.25 | 0.3 | 4378 | 95 | 8 |
| topographic | 0.86 | 0.7 | 2077 | 62 | 11 |
| maps | 1.2 | 0.4 | 5929 | 51 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| usgs historic topographic maps | 0.88 | 0.8 | 8655 | 19 |
