THE CLO and THE TOG, defined in J.R. Mather's "Climatology:
Fundamentals and Applications" [1974] as follows: "units measuring
the thermal insulation value of clothing. The clo defines the
insulation value of clothing that would allow a heat flow of 1 kg
cal m^-2 with a temperature gradient across the fabric of 0.16
degrees C. An ordinary wool business suit has an insulation value
of approximately 1 clo. The Tog also describes the thermal
resistance of clothing; 1 Tog = 0.645 clo and is equivalent in
insulation to light summer clothing."
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