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[FAQ] 69 [Keywords] Diffusion Pollutant Monitoring NO2 NOX nitrogen Bias co-location collocation colocation local bias national bias diffusion tube [Published Date (sort)] 01/03/2010 [Sort by Title] 
When defining nitrogen dioxide diffusion tube bias, is it better to use the local co-location result or the average of as many co-location studies for the laboratory and tube preparation method as possible?
LAQM FAQs - Local Air Quality Management Support - Defra, UK
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