My son, daughter, son's girlfriend, & I were eating dinner (belated Mom's Day) at a PF Changs in El Segundo when the earthquake hit. There was a waitress there who held her arms straight out to the side and loudly said, "Everyone keep still!" I think that helped calm people. The hanging lights swung for quite awhile. After sitting still to make sure it didn't get bigger everyone resumed eating as normal. I told my kids it felt like a 5, but wasn't sure since I didn't know where the epicenter was -- I was pretty darn close, lol.
We live about 15 miles southeast by freeway, in Carson, and things had fallen & broken at my house, so it must have been a lot more 'joltier' where I live than in El Segundo.