This one is good for those who want to find levels of importance which is our groundwork prior to trading the levels using SFP's or Failed Auctions. On the macro perspective, we use other strategies that is not covered here but again, these levels played the role for decisions.
We used 3rd party tools as well and maybe there are scripts here on Tradingview that also do the same. I know there is some but how well they do it, I have not checked.
Moving forward, if you want to ask questions about this approach, I will point you in the right direction.