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%
YELL2 20% Best 2.01 0.75 1.36 0.37 0.13 0.31 4.94   40.7% 15.2% 27.6% 7.5% 2.6% 6.3%
YELL2 Middle 60% 3.95 1.33 3.74 0.92 0.42 1.11 11.47   34.4% 11.6% 32.6% 8.1% 3.6% 9.7%
YELL2 20% Worst 5.02 1.84 12.04 2.54 1.18 3.19 25.82   19.5% 7.1% 46.6% 9.8% 4.6% 12.4%
YELL2 Average 3.79 1.32 4.97 1.15 0.52 1.38 13.13   28.9% 10.1% 37.9% 8.7% 3.9% 10.5%