| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| usgs topo maps historical | 1.96 | 0.1 | 9131 | 65 | 25 |
| usgs | 1.13 | 0.2 | 5054 | 49 | 4 |
| topo | 0.42 | 0.1 | 7866 | 6 | 4 |
| maps | 1.28 | 0.8 | 3169 | 1 | 4 |
| historical | 1.81 | 0.7 | 5298 | 10 | 10 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| usgs topo maps historical | 0.16 | 0.1 | 4342 | 44 |
