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%
PINN1 20% Best 4.58 2.70 2.94 1.38 0.17 2.02 13.78   33.2% 19.6% 21.3% 10.0% 1.2% 14.7%
PINN1 Middle 60% 9.70 6.83 6.50 2.93 0.46 4.02 30.44   31.9% 22.4% 21.3% 9.6% 1.5% 13.2%
PINN1 20% Worst 15.57 15.43 12.56 5.26 0.66 4.80 54.28   28.7% 28.4% 23.1% 9.7% 1.2% 8.9%
PINN1 Average 9.88 7.75 7.02 3.09 0.44 3.79 31.98   30.9% 24.2% 22.0% 9.7% 1.4% 11.8%