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%
SULA1 20% Best 1.50 0.46 1.07 0.40 0.13 0.25 3.80   39.4% 12.1% 28.0% 10.6% 3.4% 6.5%
SULA1 Middle 60% 3.72 1.23 3.79 1.07 0.40 0.88 11.09   33.6% 11.1% 34.2% 9.6% 3.6% 7.9%
SULA1 20% Worst 5.93 2.02 13.79 2.84 1.13 3.00 28.71   20.7% 7.0% 48.0% 9.9% 3.9% 10.5%
SULA1 Average 3.75 1.24 5.34 1.31 0.50 1.20 13.34   28.1% 9.3% 40.1% 9.8% 3.7% 9.0%