# Commission Regulation (EU) No 801/2010 of 13 September 2010 implementing Article 10(3) of Directive 2009/16/EC of the European Parliament and of the Council as regards the flag State criteria (Text with EEA relevance), Division 4: In order to make flag State performance comparable, the excess factor (EF) shall be used. The EF is an indication of the number of times that p has to be altered and recalculated until the number of detentions for a flag State equals the limits. Any 3 % increment or decrement in p corresponds to one whole EF-point. For flag States categorized in the grey list, the EF shall be calculated using the following formula:

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

EF = Flags’ Detentions – μ white_to_grey μ black_to_grey – μ white_to_grey

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Source: https://www.legislation.gov.uk/eur/2010/801/annex/division/Flag/division/4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2010-801/annex/division-Flag/division-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.