Interesting, but, it seems to lack the most important and practical everyday info that would help to determine what level of CYA you wanted to maintain.
ie: Given summertime 8-10 hrs of sun, high temperatures of 90 degrees, a CYA level of 10 ppm, FC level of 2 ppm in the morning, what will my CL level be after 24 hrs? 48 hrs? 1 week? How often and how much CL would I need to add to maintain CL @ 1- 2 ppm? (Or, in my case, how much higher would I need to set my SWCG to maintain a constant CL level?) I would certainly be willing to try a lower CYA level but given my present reading of 60 ppm and our near drought conditions, it will be a long time before I pump enough excess water out of the pool to drop my CYA significantly. Maybe someone who is just opening their pool with a near zero level of CYA would be willing to try very little CYA and report their experiences.