Nice cut-and-paste job. Well done!
Those are posted fares that are theoretically possible. But like I said, nothing below $1400 can be had. I ran my route all the way out to June and all returned a minimum of $1400. Many were higher; NONE were lower.
But no matter to me. I have my flight booked for next week and I see nothing that makes me think I need to change it.
Just wanted to let people to know to be careful about those FREE changes that cost $500

If you are not interested so be it.