| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| pnas impact factor 2021 | 1.58 | 0.3 | 4553 | 16 | 23 |
| pnas | 0.99 | 0.8 | 8480 | 41 | 4 |
| impact | 1.37 | 0.1 | 3281 | 60 | 6 |
| factor | 0.83 | 0.5 | 975 | 100 | 6 |
| 2021 | 1.46 | 0.1 | 1977 | 26 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| pnas impact factor 2021 | 0.49 | 0.1 | 4222 | 43 |
| pnas impact factor 2022 | 1.84 | 0.8 | 5422 | 24 |
| pnas impact factor 2020 | 0.08 | 0.6 | 3682 | 65 |
| pnas impact factor 2023 | 1.12 | 0.7 | 6515 | 88 |
| pnas impact factor 2024 | 0.69 | 0.4 | 3235 | 6 |
| pnas impact factor 2019 | 1.24 | 0.2 | 7965 | 65 |
| pnas impact factor 2015 | 1.9 | 0.9 | 9734 | 51 |
| pnas impact factor 2016 | 1.75 | 0.1 | 753 | 22 |
| pnas impact factor 2018 | 1.33 | 1 | 9668 | 90 |
| pnas journal impact factor 2021 | 0.09 | 0.5 | 474 | 11 |
