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%
PEFO1 20% Best 2.79 0.81 2.19 1.38 0.45 1.21 8.83   31.6% 9.2% 24.7% 15.6% 5.1% 13.7%
PEFO1 Middle 60% 5.24 1.29 3.90 2.09 0.82 2.17 15.51   33.8% 8.3% 25.1% 13.5% 5.3% 14.0%
PEFO1 20% Worst 8.27 1.81 13.31 4.22 1.81 5.56 34.98   23.6% 5.2% 38.1% 12.1% 5.2% 15.9%
PEFO1 Average 5.37 1.30 5.47 2.38 0.95 2.67 18.15   29.6% 7.2% 30.2% 13.1% 5.2% 14.7%