uses wind speed at an
average height of 1.5
m, the typical height of an
adult human face,
based on readings from the national standard height of 10
m, which is the typical height of an
anemometer. It incorporates heat transfer theory, i.e. heat loss from the
body to its surroundings, during
cold and
breezy or windy days.
The table
below covers the range of likely wind speeds and temperatures
/weather/articles/nr/1827