Fix Version/s: None
It is not quite clear whether we have good enough data for this in hand, but assuming we do, the task is to perform extractions for times when we've followed a star across a range of airmasses, and check how the extracted parameters vary, i.e. whether it's in a physically plausible way.
Will this work? Unclear. Ideally you'd want to have taken the data on a "photometric night" (were such a thing to exist) so that you know parameters are stable, and therefore just a function of airmass, but it is not known whether any of the nights when we made such observations got good enough data, let alone were photometric.
The plots of the extracted parameters did not turn out to be very useful, but the attached documents giving an overview of the data collected and some annotations as to what one might expect to get from different observation sequences is useful in and of itself, and to help guide further reductions and analysis once we update Spectractor to upstream master.