has the meaning given to that term in paragraph 2.2.1 of Annex D-5; in respect of each Quarter beginning on the Pool NETA Start Date shall be the amount determined in accordance with the following formula:- QPNA = (RPNC*r) / (1-(1+r) -L) where: r is the rate (expressed as a quarterly rate, and as a decimal value) determined by the Panel to be one percentage point per annum above the time weighted average of the Base Rates prevailing during the preceding Quarter; L is the remaining part of the Pool NETA Recovery Period (specified in Quarters) as at the beginning of the relevant Quarter; RPNC is the remaining portion of the principal amount comprised in the Aggregate Pool NETA Costs not recoverable in respect of previous Quarters.