The Oura Ring measures not only your temperature trend data but your heart rate as well. If your sleeping heart rate is unusually high or low, it likely means that your temperature may also have been affected.
If this is the case, the Natural Cycles algorithm will adjust your temperature and you’ll see the text ‘Adjusted by the algorithm’ along with the wrench icon in your Add Data page.
If your temperature has been adjusted, there is no need to exclude it (even if you feel hungover or sick). That is because the temperature adjustment is taking into account the deviations in the night!