Outer range of air temperatures:°C
Given the other four parameters, occupants will find thermal comfort in the wider range of temperatures ( to °C) if can change within the given range.
Inner range of air temperatures:°C
Given the other four parameters, this is the range of temperatures in which all the occupants will find thermal comfort, as long as the is within the given range.
The inner range is zero if the comfort zones corresponding to the first and last conditions do not intersect.
To cite this webpage:
Hoyt Tyler, Schiavon Stefano, Piccioli Alberto, Cheung Toby, Moon Dustin, and Steinfeld Kyle, 2017, CBE Thermal Comfort Tool. Center for the Built Environment, University of California Berkeley, http://comfort.cbe.berkeley.edu/