| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| permittivity of free space units | 0.28 | 0.5 | 7372 | 60 | 32 |
| permittivity | 1.58 | 0.8 | 6554 | 51 | 12 |
| of | 0.39 | 0.6 | 9658 | 21 | 2 |
| free | 0.61 | 0.4 | 2022 | 15 | 4 |
| space | 1.84 | 0.1 | 4755 | 96 | 5 |
| units | 0.84 | 0.4 | 1766 | 58 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| permittivity of free space units | 1.94 | 0.8 | 1885 | 7 |
