Windrose- A circular plot displaying frequencies of different wind directions and speeds.This is a windrose of wind patterns for an undisclosed location in North Carolina from July 2006 to December 2008. For example, the wind blew to the south 6.4% of the time. In total, the highest wind speeds recorded during this time, winds 10 to 20 mph, occurred only 4% of the time (http://alternativeenergyatunc.wordpress.com/2010/03/16/wind-roses/).
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