| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| numerical aperture and acceptance angle | 1.35 | 0.4 | 6936 | 21 | 39 |
| numerical | 0.17 | 0.9 | 5904 | 26 | 9 |
| aperture | 0.38 | 0.4 | 5969 | 24 | 8 |
| and | 1.11 | 0.4 | 9552 | 71 | 3 |
| acceptance | 0.26 | 0.8 | 410 | 27 | 10 |
| angle | 1.65 | 0.7 | 5166 | 22 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| numerical aperture and acceptance angle | 1.03 | 0.9 | 9260 | 33 |
