Gain Notes for Revolution 629 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 good, within about 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. The Xe line analysis is quite noisy thanks to the large number of Science windows in the revolution, some quite short, for which the Xe line is therefore very weak. JEM-X2: No scientific data or gain history data for this unit. CAO 4/2/2008