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%
DENA1 20% Best 1.07 0.15 0.65 0.34 0.07 0.46 2.74   39.1% 5.3% 23.6% 12.3% 2.7% 16.9%
DENA1 Middle 60% 2.87 0.39 1.71 0.67 0.17 1.13 6.94   41.4% 5.6% 24.7% 9.6% 2.4% 16.3%
DENA1 20% Worst 6.05 0.82 9.44 1.99 0.31 2.15 20.76   29.1% 4.0% 45.5% 9.6% 1.5% 10.3%
DENA1 Average 3.17 0.43 3.08 0.87 0.18 1.21 8.94   35.4% 4.8% 34.5% 9.8% 2.0% 13.5%