Under the Public Employees Retirement Act:
A. for a member who was a member on June 30, 2013, the final average salary is one thirty-sixth of the greatest aggregate amount of salary paid a member for thirty-six consecutive, but not necessarily continuous, months of service credit; and
B. for a member who was not a member on June 30, 2013, the final average salary is one-sixtieth of the greatest aggregate amount of salary paid a member for sixty consecutive, but not necessarily continuous, months of service credit.