Figure 2.23: Percentage of measured eight-hour average CO concentrations within air quality categories in Dunedin, 2002
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Text description of figure
The chart measures 8-hour CO concentrations in Dunedin from February to December 2002. Concentrations were “Excellent” or “Good” in the summer months, but qualities deteriorated in winter, with 10-15% of readings at “Acceptable” or “Alert” levels.
