| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| pnas impact factor 2011 | 0.93 | 0.4 | 7582 | 48 | 23 |
| pnas | 1.75 | 0.7 | 5058 | 84 | 4 |
| impact | 1.19 | 0.5 | 9337 | 56 | 6 |
| factor | 1.62 | 0.2 | 1395 | 95 | 6 |
| 2011 | 0.03 | 0.8 | 2298 | 82 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| pnas impact factor 2011 | 0.82 | 0.5 | 6995 | 45 |
