Investigating the Rate of Decline of Ozone Concentrations
A.S.L. & Associates identified those sites that demonstrated a significant reduction in ozone levels for the period 1980-1995. Using the data from the sites that experienced reduced ozone levels over the period of time, A.S.L. & Associates investigated whether the rate of decline of the mid-level hourly average concentrations was similar to the rate experienced by the high hourly average concentrations.