Jeffro : “70-100” suggest an error margin of plus/minus 15 years...
Yes, you're right. I had a mathematical blind spot. Sorry about that.
Jeffro : But it’s not clear why you would say the base date used is irrelevant though.
You earlier wrote that the initial assertion that the geomagnetic dating method 'confirms 586' was a misrepresentation of the source material. I agree. That is what I meant in saying that geomagnetic dating is irrelevant in determining the base date. The base dates are not calculated using geomagnetic dating, but are accepted as reliable by most scholars using other criteria.