Gain Notes for Revolution 827 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 very good, within 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. Results shown here use OSA8.0 software and so include temperature variation in the smoothed gain model. Calibration source number 4 (purple/orange) is no longer used for calibration purposes since an anode strip directly under the source has broken and no useable signal comes from this area of the detector any longer. JEM-X2: No scientific data or gain history data for this unit. CAO 12/08/2009