| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| natural frequency formula units | 1.86 | 0.3 | 1662 | 43 | 31 |
| natural | 0.88 | 0.7 | 9988 | 90 | 7 |
| frequency | 1.5 | 0.2 | 5257 | 81 | 9 |
| formula | 0.54 | 0.5 | 1389 | 38 | 7 |
| units | 1.87 | 0.1 | 5214 | 80 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| natural frequency formula units | 0.96 | 0.1 | 1876 | 92 |
