Motherboard: MSI Z87-G45 GAMING
What are the temperatures:
auxiliary- stays at 22-23c even though ambient temperatures are 26c.
auxtin1 - stays at 17c even though ambient temperatures are 26c.
auxtin3 - varies from 0c-206c.
I believe that at least the AUXTIN3 is an invalid value of a not connected temperature input on your mainboard.
As for the others, they might be invalid as well. You might check with the MSI Command Center tool if you find a correlation between these temperatures and HWiNFO. If there are any discrepancies, please let me know and I'll fix it.