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%
HOOV1 20% Best 1.17 0.43 0.51 0.30 0.14 0.72 3.25   35.8% 13.2% 15.6% 9.2% 4.2% 22.1%
HOOV1 Middle 60% 3.16 1.06 2.98 0.94 0.64 1.84 10.62   29.8% 10.0% 28.1% 8.8% 6.0% 17.4%
HOOV1 20% Worst 5.41 2.86 19.64 5.01 2.17 5.47 40.56   13.3% 7.1% 48.4% 12.4% 5.4% 13.5%
HOOV1 Average 3.24 1.31 5.94 1.66 0.86 2.37 15.38   21.1% 8.5% 38.6% 10.8% 5.6% 15.4%