| AirQualityCharacteristic | 
 This characteristic describes the air quality. 
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| NitrogenDioxideDensityCharacteristic | 
 This characteristic contains the current NO2 density in micrograms/m3. 
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| OzoneDensityCharacteristic | 
 This characteristic contains the current ozone density in micrograms/m3. 
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| PM10DensityCharacteristic | 
 This characteristic contains the current PM10 micrometer particulate density in micrograms/m3. 
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| PM25DensityCharacteristic | 
 This characteristic contains the current PM2.5 micrometer particulate density in micrograms/m3. 
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| SulphurDioxideDensityCharacteristic | 
 This characteristic contains the current SO2 density in micrograms/m3. 
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| VOCDensityCharacteristic | 
 This characteristic indicates the current volatile organic compound (VOC) density in
 micrograms/m3. 
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