Table 2.

Statistical distribution of demographics parameters, fundamental factors, and physiological parameters

Variable		Range	Mean	Standard deviation
Demographics parameters	Age (years)	22–55	36.62	8.24
	Weight (kg)	55.70–123.00	80.52	14.91
	Height (m)	1.61–1.90	1.76	0.06
	Body mass index (kilogram per square meter)	19.23–34.94	26.06	4.07
	Physical activity (hours per week)	0–12	2.14	2.47
	Work experience (year)	1–40	12.72	7.85
Fundamental factors	Dry temperature (degree of centigrade)	21.97–48.20	24.78	6.01
	Wet temperature (degree of centigrade)	12.10–37.57	22.01	6.60
	Globe temperature (degree of centigrade)	23.40–62.43	39.89	9.73
	Air velocity (meter per second)	0–4.20	0.58	0.39
	Total metabolism (watts)	130–490	248.47	103.70
	Clothing thermal resistance (clo)	0.50–1.35	0.83	0.14
Physiological parameters	Resting tympanic temperature (degree of centigrade)	36.7–37.4	37.01	0.15
	Working tympanic temperature (degree of centigrade)	36.7–39.1	37.7	0.56
	Resting heart rate (beat/min)	64.00–94.00	76.14	5.99
	Working heart rate (beat/min)	70.00–189.00	121.00	28.45