So i gathered tons of NBA games and the lines and the quarter lines.
I then applied an algorithm to find when teams that are successful in a certain quarter ATS or OU.
Then tested that method on the 2017-18 season and found it to hit over 67% without any other constraints.
As i started including other constraints: Home/Away, Favorite/Dog, Rest/NoRest, i could increase the % success.
Anyway, I'm not a developer, but i am pretty advanced in excel, so i just put this website together in the past 10 minutes to share the data with everyone: wiseguydata.com
If anyone is a programmer who would like to help ... message me.