Sec. 7.02. EARLY PENSION. (a) A member who terminates service on or after the member's 55th birthday but before the member's 65th birthday and who has at least 10 years of service credited in the fund is entitled to receive a monthly amount equal to a benefit determined as a fraction of the following amount:

(1) 1.35 percent of the member's average monthly compensation multiplied by the sum of the number of full and fractional years of service, not to exceed 15 years, plus the number of years and full months from the date of termination of employment to the member's 65th birthday; plus

(2) 1.65 percent of the member's average monthly compensation multiplied by the sum of the number of full and fractional years of service, not to exceed an additional 15 years, for a total of 30 years, plus the number of years and full months from date of termination of employment to the member's 65th birthday.

(b) The fraction used to compute an early retirement benefit is determined by dividing the number of full and fractional years of service by the sum of the number of full and fractional years of service plus the number of years and full months from date of termination to the member's 65th birthday.

(c) If payment of an early pension begins before the member's 65th birthday, the amount determined under Subsections (a) and (b) of this section shall be reduced by 1/180th for each of the first 60 months and 1/360th for each of the next 60 months by which the starting date of pension payments precedes that birthday.