revised observation report ( I sometimes cant subtract!) a list member was kind enough to point out in private e-mail that the original report had a rather large residual! In IOD format 99099 99 099A 8597 G 19990709102905560 17 25 1508700+250500 48 R+060 05 120000 Tony Beresford Cospar 8597 ( 34.9638S, 138.6333E, 100m ASL)