Gain Notes for Revolution 767 JEM-X1: A quite normal revolution with fine gain fitting. All the data from this revolution should be useable. The Xe analysis confirms that the energy determination for this revolution is okay, within about 2-3% of the ideal. However, as for all revolutions, the first few science windows should be avoided in any analysis requiring very good gain determination. Since the temperature variation of the gain has tripled since the beginning of the mission, future version of OSA (version 8.0), including temperature dependency, may benefit this revolution when it becomes available in 2009. JEM-X2: No scientific data or gain history data for this unit. CAO 23/2/2009