| Similarity | Rank | |
|---|---|---|
| nitrogen_oxide | 0.852 | 78932 |
| particulate_matter | 0.795 | 54856 |
| air_pollutant | 0.783 | 77087 |
| NOx | 0.765 | 71494 |
| carbon_monoxide | 0.749 | 39006 |
| carbon_dioxide | 0.735 | 11994 |
| particulate | 0.732 | 43599 |
| ozone | 0.722 | 18722 |
| greenhouse_gas | 0.704 | 18514 |
| pollutant | 0.701 | 14162 |
| soot | 0.697 | 42732 |
| ammonia | 0.693 | 28243 |
| methane | 0.686 | 14641 |
| smog | 0.686 | 39059 |
| air_pollution | 0.679 | 13199 |
| sulfur | 0.675 | 33667 |
| benzene | 0.670 | 50027 |
| emission | 0.667 | 4559 |
| coal-fired_power_plant | 0.653 | 61016 |
| Co_2 | 0.651 | 19859 |
| sulphur | 0.647 | 51354 |
| acid_rain | 0.645 | 69028 |
| water_vapor | 0.643 | 40856 |
| CO2 | 0.642 | 9699 |
| emission_from | 0.640 | 32492 |