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%
MEVE1 20% Best 2.90 0.73 1.67 0.83 0.38 0.90 7.42   39.2% 9.8% 22.6% 11.2% 5.1% 12.2%
MEVE1 Middle 60% 5.44 1.18 3.48 1.32 0.75 1.75 13.91   39.1% 8.5% 25.0% 9.5% 5.4% 12.6%
MEVE1 20% Worst 8.78 1.90 7.09 2.20 2.14 5.46 27.58   31.8% 6.9% 25.7% 8.0% 7.8% 19.8%
MEVE1 Average 5.63 1.24 3.87 1.40 0.96 2.35 15.44   36.4% 8.0% 25.0% 9.1% 6.2% 15.2%