I don't have access to the data, but I would say you likely can consider yourself in maintenance mode. You'll need to keep the FC between 10% to 20% of the 130 CYA you tested going forward (if you don't drain). I'd shoot for keeping it at about 19FC for the rest of the season and see how that goes. Remember to keep testing the FC every 1-2 days to be sure. Consider this the key and the chlorine unlocked

Good luck.