| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| spatio temporal variation | 1 | 0.9 | 5236 | 90 | 25 |
| spatio | 1.18 | 0.5 | 7934 | 14 | 6 |
| temporal | 0.51 | 0.7 | 379 | 24 | 8 |
| variation | 0.44 | 0.2 | 1951 | 16 | 9 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| spatio temporal variation | 0.73 | 0.5 | 4238 | 91 |
| spatiotemporal variation meaning | 1.22 | 1 | 3040 | 7 |
| spatiotemporal variation of mortality | 1.83 | 1 | 722 | 96 |
| spatiotemporal variation and multi-scenario | 0.16 | 0.7 | 6073 | 34 |
| spatiotemporal variation characteristics | 1.6 | 0.9 | 8858 | 99 |
| spatiotemporal variation of soil heavy metals | 1.74 | 0.3 | 4915 | 5 |
