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%
GUMO1 20% Best 4.18 1.12 1.99 0.91 0.50 2.06 10.77   38.9% 10.4% 18.5% 8.4% 4.7% 19.1%
GUMO1 Middle 60% 9.84 2.02 3.70 1.31 1.46 5.40 23.72   41.5% 8.5% 15.6% 5.5% 6.1% 22.8%
GUMO1 20% Worst 20.28 3.10 6.40 1.77 3.39 11.02 45.96   44.1% 6.7% 13.9% 3.8% 7.4% 24.0%
GUMO1 Average 10.83 2.06 3.91 1.32 1.66 5.88 25.66   42.2% 8.0% 15.2% 5.2% 6.5% 22.9%