Figure 2.5: Percentage of measured one-hour and eight-hour average CO concentrations within air quality categories at Hobson, Auckland
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There are two charts measuring CO concentrations in Hobson, Auckland, from 1996 to 2000.
The first chart shows one-hour concentrations of CO (measured by air quality categories). Air qualities declined from 1996 to 1999, but improved significantly in 2000.
The first chart shows eight-hour concentrations of CO (measured by air quality categories). Air qualities declined from 1996 to 1999, but improved significantly in 2000.
