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Figure 11.1: Percentage of measured 24-hour average PM10 concentrations within air quality categories in Westport (2002) and Greymouth (2001)
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Text description of figure
There is a graph showing 24-hour concentrations of PM10 in Westport in 2002, and Greymouth in 2001.
In Westport over 20 per cent of concentrations were in the 'alert' category, and nearly 10 per cent were over the guideline.
In Greymouth most concentrations were 'good' or 'acceptable', with a just under ten per cent in the 'alert' category.
