Not being flippant or sarcastic but define "good".
If the presented temperatures (or other parameters for that matter) correspond with the rated temperatures or temperature ranges of the component(s) in question then likely "good".
There is always some margin of error with respect to temperature measurement. And some systems will run"low" or "high".
Not necessarily right in the middle of the range.
As you learn what is normal for your system under varying loads and conditions with no problems that becomes the "good".
Changes over tlme (temperatures gradually increasing) or, worse, yet sudden rapidly climbing temperatures are certainly indications of trouble.
Each build is unique. It will stabilize with and within certain measured values. Departures from those values would be the "bad".
Do what you just did: every so often print out the specs and compare to previous results. You may discover some creeping change that, to date, had gone unnoticed.