On a load based system, cooler denser air requires less boost to meet a load set point.
So assuming this particular cylinder temperature calculation is about air density, you would want to lower the values in this table so the DME gives less weight to the fact the air is cooler with Meth. Making it request boost as if the IATs were higher and required more boost to meet load.
So I would speculate Shiv lowered the values in this table somewhat. But that is just a guess since I don't know exactly how the calculation works.
