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%
BOAP1 20% Best 3.66 1.05 2.25 1.13 0.33 1.40 9.82   37.3% 10.7% 22.9% 11.5% 3.4% 14.2%
BOAP1 Middle 60% 5.92 1.54 4.21 1.89 1.03 3.66 18.25   32.4% 8.4% 23.1% 10.4% 5.6% 20.1%
BOAP1 20% Worst 9.88 4.82 8.69 4.27 1.95 6.43 36.04   27.4% 13.4% 24.1% 11.9% 5.4% 17.8%
BOAP1 Average 6.28 2.11 4.74 2.23 1.08 3.78 20.21   31.1% 10.4% 23.4% 11.0% 5.3% 18.7%