Decides also, as an ad hoc arrangement, and taking into account the amount of 8,015,120 dollars gross (7,587,120 dollars net) already apportioned under the terms of resolution 52/229 B, to apportion the additional amount of 11,984,880 dollars gross (11,128,880 dollars net) for the period from 1 November 1998 to 30 June 1999 among Member States, at a monthly rate of 1,498,110 dollars gross (1,391,110 dollars net), in accordance with the composition of groups set out in paragraphs 3 and 4 of General Assembly resolution 43/232 of 1 March 1989, as adjusted by the Assembly in its resolutions 44/192 B of 21 December 1989, 45/269 of 27 August 1991, 46/198 A of 20 December 1991, 47/218 A of 23 December 1992, 49/249 A of 20 July 1995, 49/249 B of 14 September 1995, 50/224 of 11 April 1996, 51/218 A to C of 18 December 1996 and 52/230 of 31 March 1998 and its decisions 48/472 A of 23 December 1993 and 50/451 B of 23 December 1995, and taking into account the scale of assessments for the years 1998 and 1999, as set out in its resolution 52/215 A of 22 December 1997, subject to the decision of the Security Council to extend the mandate of the Mission of Observers beyond 15 November 1998;