Yes, there are many variables, see my post here where I explain them all.Can I just ask a question. I have read all the information and looked through the whole post.
As an engineer my self this can not be accurate for example I run a dead rabbit RDA with ss flaptons.
But if I was to run the same coils in the csment wide open or the drop RDA wide open the temperature of the coils will be completely different. And so will the position of the build as this can not always be the same unless they are made by machine but then there will always be a 1% conflict due to human error (a computer is only as good as it's programmer)
Also the way that all coils are made are actually different for example kanthal is not always 100% pure or a mixed coil with ss.
This is also the same with pre made coils and sub tanks the baby beast has more of an airflow than that of the celito exo.
Also dependant on where the coils are produced or what they are handled with.
What I am trying to get at is that every tank RDA coil cotton airflow power mod device is different.
There for are these results not assumed in the hole range an estimate for example or an average not whole.
However in TC mode the temp is extrapolated from the resistance of the coil itself. As long as the TCR matches the wire, and the mod was soundly built, the temp reading shoud be reasonably accurate. Variables such as juice/air flow etc that affect temp will be seen in the resistance of the wire.
VV & VW Mod Temperature Variables.