CFCs and Ozone

... yes, some people still have trouble accepting the inverse relationship they have.

Background

I was invited to respond to this comment:

climatereason | July 1, 2016 at 4:37 pm | Reply
Bit bemused by the ozone hole story. 2015 was the fourth largest ozone hole since the satellite record began. The peak size is generally reached in October as the sunlight and cold reach their maximum.
http://earthobservatory.nasa.gov/Features/WorldOfChange/ozone.php
Can somebody explain on what basis this claim has been made?