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%
TRCR1 20% Best 1.18 0.15 0.40 0.22 0.06 0.30 2.31   51.3% 6.3% 17.4% 9.6% 2.5% 12.8%
TRCR1 Middle 60% 3.25 0.52 1.59 0.55 0.16 0.96 7.04   46.3% 7.4% 22.6% 7.9% 2.2% 13.6%
TRCR1 20% Worst 8.56 1.60 6.26 1.33 0.39 1.71 19.85   43.1% 8.1% 31.5% 6.7% 2.0% 8.6%
TRCR1 Average 3.92 0.67 2.30 0.64 0.18 0.98 8.71   45.1% 7.7% 26.5% 7.4% 2.1% 11.3%