Gain Notes for Revolution 346 A completely ordinary revolution. Gain smoothing is fine. All data from this revolution should be useable. Some interesting glitch activity on source 1. The Xenon line analysis of the science data shows that for the vast majority of the revolution, the found Xe line is between 29-30keV, indicating that the gain correction has functioned very well, and all the data has high spectral quality. The only exception are the first few science windows after switch on where the Xe line falls a little outside these limits. As always one should be cautious when using the first science windows in a critical spectral analysis. CAO 7/2/2007