| value | description |
|---|---|
| benzeneTolueneXylene | |
| carbonMonoxide | |
| lead | |
| methane | |
| nitricOxide | |
| nitrogenDioxide | |
| nitrogenMonoxide | |
| nitrogenOxides | |
| nonMethaneHydrocarbons | |
| ozone | |
| particulates10 | |
| polycyclicAromaticHydrocarbons | |
| primaryParticulate | |
| sulphurDioxide | |
| totalHydrocarbons |