Figure 5.1: Percentage of measured one-hour and eight-hour average O3 concentrations within air quality categories in Pukekohe and Musick Point, Auckland
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Text description of figure
There are four charts showing concentrations of O3 in Auckland from 1997 to 2001. The first two charts show one-hour and 8-hour O3 measurements at Pukekohe. Concentrations improved over the period, from most measurements being “Acceptable”, to a balance of “Acceptable” and “Good”.
The second two charts show one-hour and 8-hour O3 concentrations at Musick Point. Concentrations increased from 1997 to 1999, but decreased in 2000 and 2001. Most 8-hour measurements were “Acceptable” or “Good”, while the majority of one-hour measurements were “Good”.
