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%
SAWE1 20% Best 3.49 1.19 2.88 1.74 2.00 5.00 16.31   21.4% 7.3% 17.7% 10.7% 12.3% 30.7%
SAWE1 Middle 60% 6.32 2.55 4.12 2.69 3.14 7.04 25.86   24.4% 9.9% 15.9% 10.4% 12.1% 27.2%
SAWE1 20% Worst 9.98 8.74 6.62 3.39 6.01 12.07 46.81   21.3% 18.7% 14.1% 7.2% 12.8% 25.8%
SAWE1 Average 6.53 3.58 4.40 2.65 3.52 7.69 28.38   23.0% 12.6% 15.5% 9.4% 12.4% 27.1%