Gain Notes for Revolution 463 JEM-X1: A quite normal revolution with fine gain fitting. All the data from this revolution should be useable. The Xe analysis shows that the Xe line is within about 3% of the expected value for most of the revolution. As usual, the first few science windows should be avoided since energy determination is less good just after activating the instrument. The average Xe line position is 29.9keV, only about 1% from the expected value. JEM-X2: No scientific data or gain history for this unit. CAO 30/8/2007