Figure 3.3: Percentage of measured one-hour and 24-hour average NO₂ concentrations within air quality categories in the Wellington region

Text description of figure

There are four charts showing one-hour and 24-hour concentrations of NO₂ in the Wellington region at various times. The first two charts show 24-hour and one-hour measurements at Civic Centre in 1998 and Huia Pool in 1998 and 1999. Civic Centre is mostly “Good”, with some 24-hour readings being only “Acceptable”, while the majority of measurements at Huia Pool were “Excellent”. The second two charts show 24-hour and one-hour concentrations measured in the Wellington and Wairarapa regions in 1999 and 2000. Measurements at all locations were “Good” or “Excellent”.