| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| value of permittivity of free space in cm | 0.08 | 0.3 | 8830 | 17 | 41 |
| value | 1.48 | 0.9 | 7084 | 57 | 5 |
| of | 0.14 | 1 | 7084 | 14 | 2 |
| permittivity | 0.31 | 0.8 | 1309 | 29 | 12 |
| of | 0.41 | 0.3 | 1274 | 14 | 2 |
| free | 1.07 | 0.1 | 7550 | 83 | 4 |
| space | 0.44 | 0.2 | 379 | 98 | 5 |
| in | 0.5 | 0.7 | 5605 | 21 | 2 |
| cm | 1.67 | 0.2 | 3531 | 38 | 2 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| value of permittivity of free space in cm | 1.11 | 0.9 | 2076 | 90 |
