average pay
(4) “average pay” means the largest annual rate resulting from averaging an employee’s or Member’s rates of basic pay in effect over any 3 consecutive years of creditable service or, in the case of an annuity under subsection (d) or (e)(1) of section 8341 of this title based on service of less than 3 years, over the total service, with each rate weighted by the time it was in effect;