| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| history of crude oil distillation | 1.23 | 1 | 5421 | 38 | 33 |
| history | 0.56 | 0.4 | 854 | 34 | 7 |
| of | 0.56 | 0.5 | 3696 | 5 | 2 |
| crude | 1.51 | 1 | 8762 | 48 | 5 |
| oil | 0.87 | 0.9 | 8488 | 23 | 3 |
| distillation | 1.69 | 0.7 | 2410 | 75 | 12 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| history of crude oil distillation | 0.03 | 1 | 9265 | 15 |
