Figure 3.8: Percentage of measured one-hour and 24-hour average NO2 concentrations within air quality categories at the hospital and fire station sites in Nelson, 2001
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There are four charts showing one-hour and 24-hour NO2 concentrations in Nelson from March to August 2001. The first two charts show measurements taken at Nelson Hospital. Measurements were mostly “Good”. Concentrations were marginally higher in the winter months. The second two charts show concentrations measured at the Nelson Firestation. Values fluctuated considerably, with 24-hour concentrations being high (with a small number of “Alert” level measurements) in June and July, and improving greatly in August.
