| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| composition of inspired and expired air | 0.02 | 0.5 | 363 | 36 | 39 |
| composition | 1.7 | 0.1 | 5751 | 23 | 11 |
| of | 1.91 | 0.4 | 4655 | 20 | 2 |
| inspired | 1.34 | 1 | 6917 | 12 | 8 |
| and | 1.66 | 0.6 | 9657 | 32 | 3 |
| expired | 1.03 | 0.9 | 1766 | 59 | 7 |
| air | 1.49 | 0.8 | 1705 | 98 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| composition of inspired and expired air | 0.08 | 0.3 | 9772 | 91 |
