Categories reference mass
(RM)a (kg) |
Carbon monoxide (CO)
(mg/km) |
Total hydrocarbons
(THC) (mg/km) |
Non-methane
hydrocarbons (NMHCs)
(mg/km) |
Nitrogen
oxides (NOx)
(mg/km) |
Combined mass
(THC + NOx)
(mg/km) |
Particle mass
(PM)
(mg/km) |
Number of
particles/km |