(7)Certain other exchange rate pairs including only currencies from third countries should also be included in the assessment, given their relevance for institutions' portfolios in the Union. Further, given the requirements of Article 354(1) of Regulation (EC) No 575/2013 regarding the relevant observation periods, only currencies for which a five-year daily data series is available from a trustworthy source should be taken into account when considering the currencies to be included in the assessment.