julia.endo said:It helps to ask what evidence would change your mind before you look at any.
Adding the part of the answer the thread has not reached. Start from the measurement rather than the conclusion. Almost every disagreement here turns out to be two people measuring different things and comparing the numbers anyway.
One concrete data point for the thread. The boring version of this is the one that works, and the boring version is: measure a baseline, change one variable, wait, measure again under the same conditions. Nobody wants that answer and it is still the answer.
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Shop Reference StandardsFollowing on from julia.endo — and this may be the naive question:
What did you change at the same time, and can you separate the two now?
OP back with an update, since a thread like this is useless without one.
Late follow-up. I did not do what was suggested, I did something adjacent, and it worked; posting the difference in case it matters to somebody.