8.1 CTC shall provide Merck within thirty (30) days after each quarter (31.03., 30.06., 30.09., 31.12.) with a report showing in reasonable detail the information specified under Clause 7.2 and the percentage rate of each Service Level that has been archived in the past 12 (twelve) months’ period (“Evaluation Report”). The Evaluation Report shall also show the total refund amount for which Merck is entitled.