| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| ionosphere auroras | 1.26 | 0.3 | 8275 | 78 | 18 |
| ionosphere | 1.99 | 0.3 | 4822 | 76 | 10 |
| auroras | 0.65 | 0.8 | 9670 | 27 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| ionosphere aurora | 1.16 | 0.4 | 2954 | 83 |
| ionosphere aurora borealis | 1.21 | 0.9 | 3368 | 46 |
| hosts the ionosphere where auroras occur | 0.09 | 0.3 | 5940 | 72 |
| how do auroras form in the ionosphere | 0.05 | 0.6 | 6469 | 79 |
| how auroras form in the ionosphere | 0.95 | 0.5 | 7494 | 22 |
| the auroral displays occur in the ionosphere | 1.68 | 0.8 | 9233 | 34 |
| auroral displays take place in the ionosphere | 0.93 | 1 | 5827 | 73 |
| where do auroras occur in the atmosphere | 1.83 | 0.8 | 2430 | 99 |
| auroras occur in the stratosphere | 0.2 | 0.9 | 2565 | 27 |
