Passively monitored parameters:

• Sulphur dioxide
• Nitrogen dioxide
• Ozone
• Hydrogen sulphide

Continuously monitored parameters:

• Sulphur dioxide (SO2)
• Total reduced sulphur (TRS)
• Hydrogen sulphide (H2S)
• Oxides of nitrogen (NO2, NO and NOX)
• Carbon monoxide (CO)
• Total hydrocarbons (THC)
• Methane (MHC)
• Non-Methane (NmHC)
• Ozone (O3)
• Fine particulate matter (PM2.5)

Meteorological parameters (that affect the transportation and dispersion of compounds):

• Wind speed and direction
• Solar Radiation
• Outdoor Temperature
• Relative Humidity