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%
SAPE1 20% Best 2.03 0.51 0.79 0.44 0.15 0.32 4.24   47.9% 12.0% 18.6% 10.4% 3.5% 7.5%
SAPE1 Middle 60% 4.70 1.17 2.60 0.87 0.57 0.98 10.89   43.2% 10.8% 23.9% 8.0% 5.2% 9.0%
SAPE1 20% Worst 7.86 1.85 7.17 1.74 1.64 2.46 22.72   34.6% 8.2% 31.6% 7.6% 7.2% 10.8%
SAPE1 Average 4.83 1.18 3.18 0.96 0.70 1.16 12.01   40.2% 9.8% 26.5% 8.0% 5.9% 9.6%