Gain Notes for Revolution 491
	
JEM-X1: A quite normal revolution with fine gain fitting. All the data from 
this revolution should be useable.
The Xe line analysis demonstrates that the gain correction has performed
well, to within about 3% of the ideal. As always it is recommended that
users avoid the first few science windows for applications requiring the very
best spectral/energy information since this is where the unit is settling down
after the switch on. Since there seems to be a residual temperature signal in
the Xe line position evolution, this revolution could benefit from the new
software that will include arbitrary temperature changes in the gain smoothing
procedure.

JEM-X2: No scientific data or gain history for this unit.

CAO 22/1/2008