Windspeed data collected at a test site for a windmill, and also at a nearby long-term weather site, in Northern South Dakota. Data collected every six hours for all of 2002, except that all of the month of May and a few other observations missing.
A data frame with 1116 observations on the following 5 variables.
A text variable with values like "2002/1/2/6" meaning the reading at 6AM on January 2, 2002
Windspeed in m/s at the candidate site
Windspeed for the reference site
Wind direction, in degrees, at the reference site
Wind direction binned into 16 equal width bins
Mark Ahlstrom and Rolf Miller, WindLogics, Inc.
Weisberg, S. (2005). Applied Linear Regression, 3rd edition. New York: Wiley, Problem 6.8.