Here:
http://earthquakes.wikia.com/wiki/Richter_magnitude_scale
and here:
https://cdn.citl.illinois.edu/courses/KINES401/Lesson1_lectures/Lecture1_P3/web_data/file9.htm
Do you have the map of where the series of shakes happened? It was posted but can’t find it
RE: S CA Earthquake
What happened to Dutchsinse? He gave a nightly 3D Live earthquake repors every night at 10 p.m. - really zeroed in on the California slow slip.
He disappeared the day of the quake. Very mysterious. I hunted around for the site, came upon an offline site, and asked on the chat where the site was. My “handle” appeared in a bright orange box. Weird.