4. The Commission shall adopt implementing acts laying down the detailed requirements for the making available of and the access to data in accordance with paragraphs 1 and 3 of this Article, including the specific operational data concerned, the general principles and common pricing rules for setting the prices as referred to in paragraph 2 of this Article, and requirements for the identification of entities having a proven interest in considering the provision of air navigation services. Those implementing acts shall be adopted in accordance with the examination procedure referred to in Article 48(3).