| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| how many photoreceptor types in human eye | 1.95 | 0.8 | 6480 | 82 | 41 |
| how | 1.18 | 0.9 | 8128 | 53 | 3 |
| many | 0.77 | 0.2 | 9490 | 74 | 4 |
| photoreceptor | 1.76 | 0.7 | 6221 | 60 | 13 |
| types | 1.03 | 0.9 | 3068 | 41 | 5 |
| in | 1.58 | 0.8 | 9033 | 61 | 2 |
| human | 0.8 | 0.9 | 1862 | 5 | 5 |
| eye | 0.64 | 0.6 | 7163 | 42 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| how many photoreceptor types in human eye | 1.69 | 0.8 | 3567 | 86 |
