HED has a cool tool for calculating the Apparent Wind.
http://www.hedcycling.com/aerodynami...calculator.asp
All of this basically just confirms what every cyclist already knew, the vast majority of winds are headwinds.
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You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.