definiens: shall mean Il fi - adiol1, the nllmerator of which is the most recent CPI a ' > orthe commencement of the month, or months;J, " ; the Sllpplier ~hal1 detennine from time - to - jjme, mil at any time during any month during the inijjal tenn 0'-the Fir, t Option Teml or thc Second Option Term 0 f lhi~ Sl1pply Agrcement and the dcnominator of whkh i~ the mo ~ t rc~--nt CP 1 as of the EfI : CP I means the " Con > umer Price Index, All Uroan Consumers, U.S, City Average, All Items, Standard Reference Base 1982 - 84 = lOfl.reha,>ing powcr of the consumer do1br as published at the timc of said disconjjnua tiol1 by < l re, ponsihle financial periodica l of recogni zhI, ye computation . If the Standard Reference Ba ~ c u,>ed in computing thc CPl is changed s"ch that the ( PI lor the 1982 - 84 = 100 Stundard Reference Base is no longer published, the fib'l]reS used in making the foregoing mlju > tmel1h 8h,,11 a < xordingl y be changed so that all incrcases in the CPlllTe takllTl illlO account notwithstmuling allY dl < lllge in lhe Slandard Reference Base