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%
GRSA1 20% Best 2.77 0.71 1.90 0.73 0.42 1.19 7.72   35.8% 9.2% 24.7% 9.5% 5.4% 15.5%
GRSA1 Middle 60% 5.29 1.16 3.63 1.09 0.82 2.60 14.58   36.3% 7.9% 24.9% 7.4% 5.6% 17.9%
GRSA1 20% Worst 8.13 2.05 7.04 1.82 2.39 6.79 28.23   28.8% 7.3% 25.0% 6.4% 8.5% 24.0%
GRSA1 Average 5.38 1.25 3.99 1.17 1.06 3.18 16.03   33.6% 7.8% 24.9% 7.3% 6.6% 19.9%