Article 11 3

3.   The average wholesale charge referred to in paragraph 1 shall be calculated by dividing the total wholesale revenue received by the visited network or home network operator for the provision of regulated data roaming services in the relevant period by the total number of megabytes of data actually consumed by the provision of those services within that period, aggregated on a per-kilobyte basis on behalf of the relevant roaming provider or home network operator within that period.