There is nothing quite so amazing as to see how you answered ted_smith's specific question completely and thoroughly! I didn't think the answer would exceed speculation.
I'd just become acquainted with Michael Kenna's work this year and so the question caught my attention. I never realized he taught.
Thanks for sharing this, I was about to try to puzzle out a similar series of TMY2's reciprocity characteristics, this gives me a starting point (or maybe it is all I needed).