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%
SAWT1 20% Best 1.42 0.34 2.54 0.74 0.15 0.31 5.50   25.9% 6.2% 46.1% 13.4% 2.7% 5.6%
SAWT1 Middle 60% 3.16 0.56 5.28 1.46 0.41 1.01 11.88   26.6% 4.7% 44.4% 12.2% 3.5% 8.5%
SAWT1 20% Worst 3.56 0.80 17.06 4.73 0.92 1.90 28.96   12.3% 2.8% 58.9% 16.3% 3.2% 6.5%
SAWT1 Average 2.89 0.56 7.09 1.97 0.46 1.05 14.02   20.6% 4.0% 50.5% 14.0% 3.3% 7.5%