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%
YOSE1 20% Best 1.48 0.58 1.78 0.49 0.12 0.77 5.21   28.4% 11.1% 34.2% 9.4% 2.2% 14.7%
YOSE1 Middle 60% 5.63 2.58 6.80 1.92 0.51 2.25 19.70   28.6% 13.1% 34.5% 9.8% 2.6% 11.4%
YOSE1 20% Worst 8.91 7.49 21.86 5.04 1.04 3.89 48.23   18.5% 15.5% 45.3% 10.4% 2.2% 8.1%
YOSE1 Average 5.50 3.13 8.67 2.24 0.54 2.29 22.36   24.6% 14.0% 38.8% 10.0% 2.4% 10.2%