Gain Notes for Revolution 479 JEM-X1: A quite normal revolution with fine gain fitting. All the data from this revolution should be useable. Some clear glitches is visible on the Fe sources are well smoothed by the gain correction program and in no way affect the science data. The Xe line analysis demonstrates that the gain correction has performed well, to within about 2% of the ideal. As always it is recommended that users avoid the first few science windows for applications requiring the very best spectral/energy information since this is where the unit is settling down after the switch on. JEM-X2: No scientific data or gain history for this unit. CAO 22/1/2008