# Regulation (EC) No 715/2009 of the European Parliament and of the Council of 13 July 2009 on conditions for access to the natural gas transmission networks and repealing Regulation (EC) No 1775/2005 (Text with EEA relevance), Division (4)

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

Transmission system operators shall publish measured values of the gross calorific value or the Wobbe index at all relevant points, on a daily basis. Preliminary figures shall be published at the latest 3 days following the respective gas day. Final figures shall be published within 3 months after the end of the respective month.

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Source: https://www.legislation.gov.uk/eur/2009/715/annex/I/division/3/division/3.3/division/4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-715/annex-I/division-3/division-3.3/division-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.