A narrower follow-up, since the general answer is now clear:

Was that from a primary source or from a summary of one?

NicoleRaleigh said:

If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way.

I read this differently from NicoleRaleigh, on substance rather than tone. I would resist the confidence. Half of what this board was certain about two years ago has since been quietly dropped, and nobody went back to correct the threads.

NicoleRaleigh said:

If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way.

Fair, and it stops being fair at the extremes. The middle of the range is well understood; the ends are where the honest answer is that nobody knows.

I would rather be corrected than agreed with, if it comes to it.

NicoleRaleigh said:

If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way.

Thank you — that is the clearest version of this I have read, and I have read a lot of them.

Reporting back.

Reporting back with a partial result, because a partial result is still better than silence. Two of the three things suggested helped; I cannot separate them and I am not going to pretend otherwise.