Section 86.1370 - Data to be maintained by board - annual statement required - actuarial study and calculation required - medical board to be appointed - seal to be adopted1. The retirement board shall keep in convenient form such data as is necessary for administration of the retirement system. The retirement board shall keep a record of all its proceedings which shall be open to public inspection.2. The retirement board shall publish annually a statement reporting the operations of the retirement system for the year, including income and disbursements during the year and the financial condition of the retirement system at the end of the year, including actuarial valuation and valuations of its assets and liabilities as of April thirtieth of each year. Such statement shall be consistent with results reviewed and approved by independent certified public accountants selected by the board. One copy of the annual report shall be delivered to each member of the retirement board and each member of the board of police commissioners, and one copy shall be filed with the city clerk. Copies of the report shall be made conveniently available to each member of the retirement system.3. The retirement board shall cause an actuarial study and calculation to be made annually based upon the experiences of the retirement system by an independent firm of pension actuaries.4. The retirement board shall appoint a medical board of not more than three physicians, each of whom shall serve at the pleasure of the retirement board, to arrange for and conduct medical examinations as requested by the retirement board.5. The retirement board shall adopt a common seal.