| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| coal petrography ppt | 1.12 | 0.2 | 2900 | 91 | 20 |
| coal | 1.37 | 0.2 | 2224 | 50 | 4 |
| petrography | 1.42 | 0.5 | 9063 | 40 | 11 |
| ppt | 0.96 | 0.6 | 2191 | 22 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| coal petrography ppt | 0.15 | 0.9 | 7308 | 71 |
| coal petrography pdf | 1.54 | 1 | 324 | 61 |
