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%
LABE1 20% Best 1.87 0.74 1.48 0.51 0.11 0.45 5.15   36.3% 14.4% 28.6% 9.9% 2.2% 8.7%
LABE1 Middle 60% 5.17 1.62 4.59 1.29 0.50 1.51 14.68   35.2% 11.0% 31.3% 8.8% 3.4% 10.3%
LABE1 20% Worst 8.08 4.26 25.87 5.38 1.12 2.43 47.14   17.1% 9.0% 54.9% 11.4% 2.4% 5.2%
LABE1 Average 5.11 1.98 8.31 1.97 0.55 1.49 19.41   26.3% 10.2% 42.8% 10.1% 2.8% 7.7%