Figure 2.7: Percentage of measured one-hour and eight-hour average CO concentrations within air quality categories at Manurewa and Pakuranga, Auckland
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Text description of figure
There are two charts measuring CO concentrations at Manurewa and Pakuranga, Auckland, from 1996 to 2001.
The first chart shows one-hour concentrations of CO (measured by air quality categories). Air qualities have improved marginally throughout the period, with the majority of the measured concentrations being in the “Excellent” category.
The second chart shows eight-hour concentrations of CO (measured by air quality categories). Air qualities have improved over the period (most measurements being “Excellent” and “Good”).
