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%
JARB1 20% Best 1.44 0.32 0.90 0.35 0.15 0.59 3.75   38.3% 8.4% 23.9% 9.4% 4.0% 15.9%
JARB1 Middle 60% 3.06 0.74 2.93 0.82 0.64 2.25 10.46   29.3% 7.1% 28.0% 7.9% 6.2% 21.5%
JARB1 20% Worst 4.33 1.08 9.97 2.41 2.47 5.85 26.12   16.6% 4.2% 38.2% 9.2% 9.5% 22.4%
JARB1 Average 3.01 0.73 3.96 1.05 0.92 2.66 12.32   24.4% 5.9% 32.1% 8.5% 7.4% 21.6%