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%
CAPI1 20% Best 2.12 0.92 1.61 0.70 0.26 1.37 6.98   30.3% 13.1% 23.1% 10.0% 3.7% 19.6%
CAPI1 Middle 60% 4.30 1.62 2.81 1.02 0.67 2.41 12.82   33.5% 12.7% 21.9% 7.9% 5.2% 18.8%
CAPI1 20% Worst 6.11 3.10 7.51 1.99 1.76 4.91 25.39   24.1% 12.2% 29.6% 7.8% 6.9% 19.3%
CAPI1 Average 4.24 1.79 3.54 1.15 0.81 2.72 14.26   29.8% 12.5% 24.8% 8.1% 5.7% 19.1%