Average light extinction (1/Mm) and percentage contributions to the aerosol light extinction (Bep) of the major aerosol chemical components in 20% best, middle 60%, and 20% worst days based on data available during the year of 1997-2002

Location Data Sulfate Nitrate OMC LAC Soil CM Aerosol Ext   Sulfate% Nitrate% OMC% LAC% Soil% CM%
NOCA1 20% Best 2.06 0.45 0.77 0.30 0.04 0.21 3.84   53.7% 11.8% 20.1% 7.9% 1.0% 5.4%
NOCA1 Middle 60% 7.51 1.21 2.83 0.95 0.16 0.62 13.29   56.5% 9.1% 21.3% 7.2% 1.2% 4.7%
NOCA1 20% Worst 18.29 2.89 8.60 2.41 0.49 1.67 34.35   53.2% 8.4% 25.0% 7.0% 1.4% 4.9%
NOCA1 Average 8.63 1.40 3.60 1.12 0.21 0.75 15.70   54.9% 8.9% 22.9% 7.1% 1.3% 4.8%