Paragraph 4

Each pilotage authority shall furnish the Commission with information reasonably required by the Commission for the purpose of ascertaining or confirming the amount of relevant receipts in any month within the operative period.

If it appears to the Commission that a pilotage authority has failed to furnish it with reliable information as to the relevant receipts in any month within the operative period, it may estimate as best it can the amount of relevant receipts in that month and payment shall be made by the authority on that basis.