| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| permitivity of free space | 1.56 | 1 | 3701 | 15 | 25 |
| permitivity | 1.17 | 0.1 | 9143 | 1 | 11 |
| of | 1.44 | 0.4 | 1410 | 46 | 2 |
| free | 1.31 | 0.8 | 1644 | 64 | 4 |
| space | 1.95 | 0.7 | 550 | 33 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| permitivity of free space | 1.19 | 0.3 | 2179 | 9 |
