| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| refrigeration and air conditioning textbook | 0.14 | 0.3 | 3630 | 17 | 43 |
| refrigeration | 0.28 | 0.1 | 5077 | 65 | 13 |
| and | 0.57 | 0.4 | 869 | 8 | 3 |
| air | 0.2 | 0.8 | 564 | 75 | 3 |
| conditioning | 1.22 | 0.8 | 1488 | 14 | 12 |
| textbook | 1.5 | 0.4 | 4254 | 11 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| refrigeration and air conditioning textbook | 1.21 | 0.1 | 8285 | 62 |
