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%
ROMO1 20% Best 1.73 0.34 1.11 0.53 0.14 0.77 4.63   37.5% 7.4% 23.9% 11.4% 3.1% 16.6%
ROMO1 Middle 60% 4.90 1.61 3.51 1.24 0.63 2.10 13.98   35.0% 11.5% 25.1% 8.9% 4.5% 15.0%
ROMO1 20% Worst 9.41 5.00 8.83 2.76 1.34 4.26 31.60   29.8% 15.8% 27.9% 8.7% 4.2% 13.5%
ROMO1 Average 5.20 2.06 4.13 1.41 0.68 2.28 15.76   33.0% 13.0% 26.2% 9.0% 4.3% 14.5%