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%
CRMO1 20% Best 2.01 1.36 1.47 0.48 0.23 0.98 6.52   30.8% 20.8% 22.5% 7.4% 3.5% 15.0%
CRMO1 Middle 60% 3.98 3.25 4.01 1.15 0.65 2.02 15.06   26.4% 21.6% 26.6% 7.7% 4.3% 13.4%
CRMO1 20% Worst 7.08 16.20 8.44 2.22 1.11 2.74 37.80   18.7% 42.9% 22.3% 5.9% 2.9% 7.2%
CRMO1 Average 4.23 5.50 4.41 1.24 0.66 1.96 18.00   23.5% 30.6% 24.5% 6.9% 3.7% 10.9%