NurseKim_ATL said:

The mechanism and the magnitude are separate questions.

True, and it depends on a baseline nobody has stated. Without knowing where someone started, the same number can be an excellent result or a disappointing one.

SallyK_inj said:

The absorption variability is real, but it partly averages out over weeks — the steady-state trough is less erratic than any single day would suggest.

This is exactly what I could not find anywhere else. I will report back once I have actually tried it.

NurseKim_ATL said:

The mechanism and the magnitude are separate questions.

Filing a mild objection. Mild because I might be wrong; an objection because nobody has addressed the case that does not fit. The counter-case has not been addressed. Somebody upthread described the situation that does not fit, and the thread moved on rather than engaging with it, which is the failure mode this board is supposed to avoid.

The figures, for anyone assembling their own picture. Practical: whatever you change, write down the date and the reason. In three months the reason is what you will have forgotten, and the reason is what makes the record worth having.

Moderator note: good thread. Keeping it here rather than moving it, because the question is general enough to be useful.