Body temperature

Body temperature was a value registered by the sonic sunglasses in degrees Celsius.

Humans
Living humans commonly registered a body temperature of between 37 and 38 degrees Celsius. Bill Potts had a body temperature of 37.6 degrees Celsius, the Secretary General had a temperature of 37.9 degrees Celsius, Xiaolian had a temperature of 37.7 degrees Celsius, Don Brabbit had a temperature of 38.0 degrees Celsius and Ilya Svyatoslavovich had a temperature of 37.6 degrees Celsius. (TV: The Pyramid at the End of the World)

Similarly, Shadow People, which imitated human life, also registered a body temperature of between 37 and 38 degrees Celsius. Cardinal Angelo had a temperature of 37.3 degrees Celsius, as did Piero. The Pope's entourage all had temperatures of between 37 and 38 degrees Celsius. (TV: Extremis)

The dead President, however, had a temperature of 32.1 degrees Celsius. (TV: The Pyramid at the End of the World)

Other species
Time Lords such as the Eighth Doctor could have a body temperature far below human average. According to Tom Cardwell, the Doctor had a body temperature of 15 degrees. The Doctor replied that "I suppose it is cold out there". (AUDIO: Blood of the Daleks) On another occasion the Fifth Doctor was assessed by lieutenant Hopkins of UNIT who stated he had a body temperature of 31 degrees celsius (AUDIO: The Helliax Rift)

Statistically, Nardole was also below the common human body temperature, at 30.3 degrees Celsius. (TV: The Pyramid at the End of the World) This was likely due to his cybernetic body. (TV: The Return of Doctor Mysterio, The Pilot, et al.)

The body temperature of individual Monks could not be calculated by the sonic sunglasses. (TV: The Pyramid at the End of the World)