Sources of Air Emission:

• this provides information on the percentage contribution of different sources of air pollutants e.g. agriculture, industry, vehicles, fuel burning etc
• pollutants include Particulate Matter, Carbon Monoxide, Sulphur Dioxide, Oxides of Nitrogen and Organic Compounds

Annual Average 1998 & Typical Annual Cycle - SO₂
Long Term Trends - SO₂
Monthly Average - SO₂

Typical Daily Cycle - NO_x

Typical Annual Cycle - Pb
Lead trends 1992 - 1997

Annual Average 1998 & Typical Annual Cycle - Smoke
Long Term Trends - Smoke

VOC levels per area

Typical Daily Cycle - O₃