A convenient standard for thermal comfort is required.
Analysis shows that a variety of factors can be involved in situations of discomfort.
For example, temperature alone does not determine discomfort. The difference is due entirely to the relative humidity of the atmosphere. In Bahrain the air is very humid and perspiration evaporates slowly, decreasing the body's ability to lose heat. In Athens, with its dry air, the evaporation rate is high and perspiration evaporates quickly lowering body temperature. Extensive studies have established representative physiological scales that take into account all of these variables.