For each Supplier, in respect of each Quarter, the “Quarterly 1998 Programme Charge” (Q1998PC) payable by it in respect of that Quarter, shall be determined in accordance with the following formula: Q1998PC = Q1998PA x (C1998MWH / TC1998MWH) where:- C1998MWH is the Chargeable 1998 MWh for the Supplier; TC1998MWH is the aggregate of Chargeable 1998 MWh for all Suppliers; Q1998PC is the Quarterly 1998 Programme Charge for the Supplier; and Q1998PA is the Quarterly 1998 Programme Amount for that Quarter. Has the meaning given to that term in paragraph 1.2.3 of Annex D-5;