Gain Notes for Revolution 570 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 1-2% 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 unplanned switch off and re-activation at the start of the revolution does not significantly affect the energy determination. JEM-X2: No scientific data or gain history data for this unit. CAO 31/8/2007