Each forecast has a myWindsock Score. This is Air Penalty in relationship to the overall ground distance. A score of 100 would be an air distance twice that of ground distance, an extremely difficult ride. On the other hand a score of 0 represents no air resistance as the air travelled with the rider accumulating no air distance. A score of 50 indicates even conditions. Typically a loop or out and back course will generate a score of around 49-51.