| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| atom number of oxygen | 1 | 0.5 | 2049 | 77 | 21 |
| atom | 1.67 | 0.4 | 7569 | 26 | 4 |
| number | 1.27 | 0.6 | 8761 | 66 | 6 |
| of | 1.62 | 0.2 | 2995 | 31 | 2 |
| oxygen | 1.47 | 0.3 | 4559 | 48 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| atom number of oxygen | 0.17 | 0.9 | 7512 | 39 |
