Gain Calibration Notes for Rev. 366 Relatively little noise and no large glitches. Also no unexpected switch offs or other problems. The gain smoothing has worked fine and all the data from this revolution should be useable. Xe line analysis shows that the gain correction has worked very well for this revolution, though the first few Science Windows (as usual) deviate most from the ideal gain determination, and these should be used with due caution. CAO 16/1/2007