Figure 13.2: Percentage of measured 24-hour average PM₁₀ concentrations within air quality categories in New Zealand

Textural description of figure

There is a map of New Zealand with graphs showing 24-hour average PM₁₀ concentrations for different regions.

There is a chart for Whangarei in 2001. Nearly 30 per cent of concentrations were in the 'good' category, nearly 50 per cent were 'acceptable', 20 per cent were 'alert', and about 2 per cent were over the guideline.

There is a chart that shows concentrations of PM₁₀ measured in Auckland in 2000. At Henderson about 50 per cent of concentrations were in the 'good' category, nearly 50 per cent were in the 'acceptable' category, and just a few per cent were in the 'alert' category. In Mount Eden just under 50 per cent were in the 'good' category, about 40 percent were in the 'acceptable' category, and nearly 10 per cent were in the 'alert' category. In Takapuna nearly 80 per cent of concentrations were in the 'good' category, with the remaining concentrations in the 'acceptable' category.

There is a chart showing 24-hour PM₁₀ concentrations in the Bay of Plenty in 2001. In Whakatane nearly 80 per cent of concentrations were in the 'good' category, 20 per cent were 'acceptable', with the remaining in the 'alert' category. In Pongakawa just over 80 per cent of concentrations were in the 'good' category, with just under 20 per cent were in the 'acceptable' category, and the remaining concentrations in the 'alert' category. In Rotorua 85 per cent of concentrations were in the 'good' category, just over 10 per cent were in the 'acceptable' category, with the remaining concentrations in the 'alert' category. In Tauranga nearly 90 per cent of concentrations were in the good category, with the remaining concentrations in the 'acceptable' category.

There is a chart showing 24-hour concentrations of PM₁₀ measured in Gisborne in 2000. All concentrations were in the 'good' category.

There is a chart showing 24-hour concentrations of PM₁₀ measured in Napier in 2001. 80 per cent of concentrations were in the 'good' category, with the remaining concentrations in the 'acceptable' category.

There is a chart showing 24-hour concentrations of PM₁₀ measured in the Waikato. In Hamilton in 2001 nearly 80 per cent of concentrations were in the 'good' category, about 20 per cent were in the 'acceptable' category, with the remaining concentrations in the 'alert' category. In Tokoroa in 2001 just over 15 per cent of concentrations were in the 'good' category, about 65 per cent were in the 'acceptable' category, 15 per cent were in the 'alert' category, and the remaining 5 per cent were above the guideline. In Te Kuiti in 1998 roughly 65 per cent of concentrations were in the 'good' category, 30 per cent were in the 'acceptable' category, with the remaining 5 per cent in the 'alert' category. In Taupo in 2001 45 per cent of concentrations were in the 'good' category, about 40 per cent were in the 'acceptable' category, nearly 15 per cent were in the 'alert' category, with the remaining concentrations over the guideline.

There is a chart showing 24-hour concentrations of PM₁₀ measured in the Wellington region. In Wellington (Government House, Newtown) 90 per cent of concentrations were in the 'good' category, with the remaining concentrations in the 'alert' category. In Lower Hutt in 1998 just over 70 percent of concentrations were in the 'good' category, with the remaining concentrations in the 'acceptable' category. In Upper Hutt in 2001 nearly 80 per cent of concentrations were in the 'good' category, nearly 20 per cent were 'acceptable', and the remaining concentrations were in the 'alert' category. In Otaki in 1999 just over 50 per cent of concentrations were in the 'good' category, nearly 40 per cent were in the 'acceptable' category, with the remaining 10 per cent in the 'alert' category. In wainuiomata in 2001 about 85 per cent of concentrations were in the 'good' category, less than 5 per cent were in the 'acceptable' category, with the remaining 10 per cent in the 'alert' category. In Masterton in 1999 nearly 80 per cent of concentrations were in the 'good' category, 10 per cent were in the 'acceptable' category, and 10 per cent were in the 'alert' category.

There is a chart showing 24-hour concentrations of PM₁₀ measured in the Marlborough and Tasman regions. In Blenheim in 2001 nearly 60 per cent of concentrations were in the 'good' category, 30 per cent were in the 'acceptable' category, and 10 per cent were in the 'alert' category. In Picton in 2000 nearly 80 per cent of concentrations were in the 'good' category, with the remaining concentrations in the 'acceptable' category. In Nelson in 2001 about 30 per cent of concentrations were in the 'good' category, another 30 per cent were in the 'acceptable' category, 10 per cent were in the 'alert' category, and the remaining 30 per cent were over the guideline.

There is a chart showing 24-hour concentrations of PM₁₀ measured in the Christchurch area. At Rangiora in 2000 70 per cent of concentrations were in the 'good' category, 25 per cent were in the 'acceptable' category, and the remaining 5 per cent were in the 'alert' category. In Kaiapoi in 2001 nearly 50 per cent of concentrations were in the 'good' category, 30 per cent were in the 'acceptable' category, 10 per cent were in the 'alert' category, and 10 per cent were over the guideline. In Christchurch in 2001 just over 55 per cent of concentrations were in the 'good' category, 25 per cent were in the 'acceptable' category, just under 10 per cent were in the 'alert' category, and just over 10 per cent were over the guideline.

There is a chart showing 24-hour concentrations of PM₁₀ measured in south Canterbury. In Timaru in 2001 about 45 per cent of concentrations were in the 'good' category, nearly 40 per cent were in the 'acceptable' category, just over 10 per cent were in the 'alert' category, with the remaining ten per cent were over the guideline. In Ashburton in 2000 50 per cent of concentrations were in the 'good' category, just over 40 per cent of concentrations were in the 'acceptable' category, and the remaining concentrations were in the 'alert' category.

The final chart shows 24-hour concentrations of PM10 in Otago. In North East Valley, Dunedin, in 2001, 65 per cent of concentrations were in the 'good' category, over 30 per cent of concentrations were in the 'acceptable' category, and the remaining concentrations were in the 'alert' category. In Alexandra in 2001 just over 40 per cent of concentrations were in the 'good' category, just over 20 per cent were in the 'acceptable' category, just over 15 per cent were in the 'alert' category, and the remaining 25 per cent were over the guideline.