You use the adjusted TA when you use the Taylor watergram. It comes out with almost exactly the same result as my spreadsheet which is more accurate than the traditional LSI so I think the watergram is great. On the other hand, you have to be pretty far out of balance before you get into a scaling or corrosion situation so don't sweat not being at "0.0" I wouldn't even have a second thought withing +/- 0.3 and most wouldn't care about +/- 0.5 and we have only started to see issues at 0.7 for one person and 1.0 for another.

This thread talks more about what people think about the index.

Richard