# 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 (1): Transmission system operators shall ensure the publication on a daily basis and updated every day the aggregated amounts of capacities offered, and contracted on the secondary market (i.e. sold from one network user to another network user), where the information is available to the TSO. This information shall include the following specifications:

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

(a)interconnection point where the capacity is sold;
(b)type of capacity, i.e. entry, exit, firm, interruptible;
(c)quantity and duration of the capacity usage rights;
(d)type of sale, e.g. transfer or assignment;
(e)the total number of trades/transfers;
(f)any other conditions known to the transmission system operator as mentioned in 3.3.
In so far such information is provided by a third party, transmission system operators shall be exempted from this provision.

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Source: https://www.legislation.gov.uk/eur/2009/715/annex/I/division/3/division/3.4/division/1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-715/annex-I/division-3/division-3.4/division-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.