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%
ULBE1 20% Best 2.47 0.64 1.52 0.62 0.17 1.04 6.46   38.3% 9.9% 23.5% 9.6% 2.6% 16.1%
ULBE1 Middle 60% 6.08 1.49 3.83 1.06 0.47 2.26 15.18   40.1% 9.8% 25.2% 7.0% 3.1% 14.9%
ULBE1 20% Worst 12.21 9.35 9.64 2.54 0.62 3.05 37.41   32.6% 25.0% 25.8% 6.8% 1.7% 8.1%
ULBE1 Average 6.63 2.94 4.57 1.28 0.44 2.18 18.04   36.8% 16.3% 25.3% 7.1% 2.5% 12.1%