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%
PORE1 20% Best 5.84 1.93 1.78 0.48 0.09 3.00 13.13   44.5% 14.7% 13.6% 3.7% 0.7% 22.9%
PORE1 Middle 60% 11.93 4.58 3.29 0.84 0.21 5.24 26.08   45.8% 17.6% 12.6% 3.2% 0.8% 20.1%
PORE1 20% Worst 19.87 30.42 12.50 3.67 0.45 6.47 73.37   27.1% 41.5% 17.0% 5.0% 0.6% 8.8%
PORE1 Average 12.39 9.41 4.90 1.35 0.23 5.06 33.36   37.2% 28.2% 14.7% 4.1% 0.7% 15.2%