# Commission Regulation (EU) 2017/2400 of 12 December 2017 implementing Regulation (EC) No 595/2009 of the European Parliament and of the Council as regards the determination of the CO2 emissions and fuel consumption of heavy-duty vehicles and amending Directive 2007/46/EC of the European Parliament and of the Council and Commission Regulation (EU) No 582/2011 (Text with EEA relevance), Division 3.4.6: Stationary weather station

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

Ambient pressure and humidity of the ambient air are determined from a stationary weather station. This meteorological instrumentation shall be positioned in a distance less than 2 000 m to one of the measurement areas, and shall be positioned at an altitude exceeding or equal that of the measurement areas.
Required accuracy:
i. Temperature ± 1 °C
ii. Humidity ± 5 % RH
iii. Pressure ± 1 mbar
iv. Update rate ≤ 6 minutes

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Source: https://www.legislation.gov.uk/eur/2017/2400/annex/VIII/division/3/division/3.4/division/3.4.6 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-2400/annex-VIII/division-3/division-3.4/division-3.4.6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.