| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| substances that are discharged into the air | 1.46 | 0.1 | 5871 | 95 | 43 |
| substances | 0.54 | 0.6 | 2007 | 42 | 10 |
| that | 0.91 | 0.4 | 2058 | 49 | 4 |
| are | 1.07 | 0.9 | 7836 | 33 | 3 |
| discharged | 0.3 | 0.7 | 5745 | 52 | 10 |
| into | 1.9 | 0.5 | 2925 | 33 | 4 |
| the | 0.85 | 0.6 | 5519 | 15 | 3 |
| air | 0.26 | 0.8 | 9280 | 28 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| substances that are discharged into the air | 1.41 | 0.2 | 6101 | 83 |
| what are substances discharged into the air | 0.24 | 1 | 7951 | 68 |
| what substance is removed from the air | 1.85 | 0.7 | 2270 | 98 |
| what substances make up air | 1.7 | 0.3 | 5131 | 61 |
| chemicals in the air | 1.59 | 0.2 | 5911 | 9 |
| substance that moves from air to bloodstream | 0.58 | 0.6 | 9824 | 94 |
| what substance is air | 1.67 | 1 | 1478 | 10 |
| what chemicals make air | 1.22 | 0.2 | 1839 | 18 |
| what gases are added to inhaled air | 0.64 | 0.1 | 7406 | 84 |
| what is discharge air | 1.75 | 0.3 | 3658 | 62 |
| what kind of substance is air | 1.84 | 0.6 | 6190 | 37 |
| what is in inhaled air | 0.99 | 0.4 | 6501 | 13 |
| what type of substance is air | 0.08 | 0.6 | 1589 | 69 |
