Differences between Sephardi/Ashkenazi Torah scrolls

Hi! I’ve recently read that there are 9 spelling differences in the text of Sephardi Torah scrolls and Ashkenazi ones. I was hoping someone could give me a list of these occurences. Is there any Rabbinical explanations as to these differences. Thank you!

The differences appear at the following link: http://www.saad.org.il/elihu/nusah.html