The database for the 3-hourly observations was changed (04-05-04) and relinked. In case you run into trouble, make sure that you do not use old links from your bookmarks or cache. If the trouble will remain, please contact: Dr. G. König-Langlo

For rather short periods the database may be under construction.
Thus, direct data retrieval might not be possible at all times. In case of problems, please try again later or contact me.