Gain Notes for Revolution 576 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 2% of the ideal, and for most of the revolution the accuracy is even better than this. However, as for all revolutions, the first few science windows should be avoided in any analysis requiring very good gain determination. JEM-X2: No scientific data or gain history data for this unit. CAO 31/8/2007