(1)Article 10 of Regulation (EU) No 1308/2013 provides that Union scales for the classification of pig carcasses are to apply in accordance with point B of Annex IV to that Regulation. Section B.IV, point 1, of Annex IV to that Regulation provides that, for the classification of pig carcasses, the lean meat content is to be assessed by means of grading methods authorised by the Commission, that only statistically proven assessment methods based on the physical measurement of one or more anatomical parts of the pig carcass may be authorised and that grading methods are subject to compliance with a maximum tolerance rate for statistical error in assessment. That tolerance is defined in Part A, point 1, second paragraph, of Annex V to Commission Delegated Regulation (EU) 2017/1182note.