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%
WHIT1 20% Best 2.52 0.54 1.67 0.72 0.24 0.95 6.63   38.0% 8.1% 25.1% 10.8% 3.6% 14.3%
WHIT1 Middle 60% 5.79 1.13 3.30 1.03 0.94 3.15 15.34   37.7% 7.4% 21.5% 6.7% 6.1% 20.5%
WHIT1 20% Worst 14.02 3.95 7.74 1.93 2.05 7.40 37.09   37.8% 10.7% 20.9% 5.2% 5.5% 20.0%
WHIT1 Average 6.84 1.59 3.89 1.15 1.03 3.59 18.10   37.8% 8.8% 21.5% 6.4% 5.7% 19.8%