(2)Some of these weightings need to be adjusted in accordance with the second paragraph of Article 13 of Annex X to the Staff Regulations, with effect from 1 February, 1 March, 1 April, 1 May and 1 June 2010, since the statistics available to the Commission show that in certain third countries the variation in the cost of living measured on the basis of the weighting and the corresponding exchange rate has exceeded 5 % (since weightings were last laid down or since they were adjusted by the Commission Decision 2010/790/EUnote),