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%
BRID1 20% Best 2.00 0.48 1.12 0.44 0.10 0.52 4.67   42.9% 10.3% 23.9% 9.5% 2.2% 11.2%
BRID1 Middle 60% 3.99 0.98 3.02 0.95 0.39 1.34 10.66   37.4% 9.2% 28.3% 8.9% 3.6% 12.6%
BRID1 20% Worst 6.23 1.45 8.01 1.86 1.00 2.79 21.34   29.2% 6.8% 37.5% 8.7% 4.7% 13.1%
BRID1 Average 4.06 0.98 3.67 1.04 0.46 1.48 11.69   34.8% 8.4% 31.4% 8.9% 3.9% 12.6%