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A database of bias adjustment factors determined from Local Authority co-location studies throughout the UK has been collated by the Local Air Quality Management Helpdesk. Using orthogonal regression, combined bias adjustment factors have been calculated for each laboratory, year and preparation method combination for which data are available.
The database, which is in the form of an Excel spreadsheet, is updated regularly and may be downloaded below.
http://laqm.defra.gov.uk/bias-adjustment-factors/national-bias.html
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