| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| refractive index of quartz crystal | 0.77 | 0.1 | 9934 | 71 | 34 |
| refractive | 1.92 | 0.9 | 1790 | 97 | 10 |
| index | 1.99 | 0.7 | 6351 | 39 | 5 |
| of | 0.01 | 0.7 | 2673 | 96 | 2 |
| quartz | 1.28 | 0.5 | 518 | 18 | 6 |
| crystal | 0.75 | 0.7 | 3268 | 46 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| refractive index of quartz crystal | 1.3 | 0.6 | 4676 | 26 |
