The European hot air ballooning championships took place in Wloclawek, Poland on September 6-14. The Swiss teams used Windsond to help them plan their flights. They fared well; all four Swiss teams scored in the top third of the field of 81 competitors (see the results). A part of this favorable result is attributable to Windsond. Here is an account of how the Swiss teams had good use of Windsond during one of the tasks, as told by participant Léon André. The flight No. 3 of the 18th FAI Hot...