The W126 ozone levels predicted at
0.5 degree grids are shown to the right. The map was prepared
using kriging interpolation previously performed by A.S.L. &
Associates for the 8 states for the period 1990-1995. For each
of the years, the actual N100 values were plotted on the same
maps. The figure is an example that shows the ambient exposures
for the study region.