# Commission Regulation (EC) No 692/2008 of 18 July 2008 implementing and amending Regulation (EC) No 715/2007 of the European Parliament and of the Council on type-approval of motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and maintenance information (Text with EEA relevance), Division 1.2.23

Extent: E+W+S+N.I.

‘Root mean square’ ( x rms ) means the square root of the arithmetic mean of the squares of values and defined as:
x rms = 1 n x 2 1 + x 2 2 + … + x 2 n
where:
x is the measured or calculated value
n is the number of values

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Source: https://www.legislation.gov.uk/eur/2008/692/annex/IIIA/division/1/division/1.2/division/1.2.23 (the official version)
Page: https://openlegislation.uk/eu-regulation-2008-692/annex-IIIA/division-1/division-1.2/division-1.2.23
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.