The 4-directional wave rider buoys are situated at many places: They are moored in the Baltic Sea, North Sea (Sylt) and Caribbean (Colon, Pananma). Older positions are Fedje in Norway, Odra Lagoon, Koserow (out of Odra Lagoon), Hiddensee, Büsum and Amrum (Pallas)They are operating and delivering data since 1998.
The most actual Data from 5 buoys is shown on the right frame.