So just to clarify - my main questions were regarding the software’s binning of the zones. I understand from a physiological perspective these lines are not clear but I was curious as to how this may be calculated.
I 100% know what I can do, and frankly threshold is a weakness of mine. I was more interested in how though the trickledown effect is calculated.
In any case, levels resolved by slapping in a tasty workout this morning 
