Gain Notes for Revolution 777 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 3% of the ideal. The general level of the Xe line is rather too low, but this is probably just due to the line lying close to the upper energy cutoff, and does not reflect a general lowering of the entire energy range. JEM-X2: No scientific data or gain history data for this unit. CAO 17/03/2009