By C. Pikros and P. Kourouvakalis
as printed in the "Air sports" news-letter, July.94
The article was titled: "Easterly shift of the wind in Beotia". In fact it covers a larger area.
When the activity of hang-gliding and para-gliding started growing, it expended on many slopes around the country .
We started receiving reports of sudden wind shift in most places in Attika and Beotia.
The wind, being north in the morning, shifted to the eastern sector in the afternoon hours.
The unstable northern masses were replaced by more stable eastern marine air, and this spoiled the nice flying weather.
We studied the time of the wind shift in many flying sites, and we put the information in the following map.
The time of the shift was not derived by any statistical analysis, just people's experience.
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