Editorial: Gusts, turbulence and mean speed
In reports from meteorological observing stations, wind is usually given as a mean speed. The gusts (the high values) and the lulls (the low values) are averaged over 10 minutes (or other suitable interval) so that a quantity which reflects the overall motion of the air is achieved. This is of more general significance than say gusts, which are a very local phenomena. In order to be truly 'representative', the observation needs to be made in open, flat land or over a sea surface.