1. DTU Space, National Space Institute; Technical University of Denmark; Kongens Lyngby Denmark
2. Equipe de Géomagnétisme, Institut de Physique du Globe de Paris, Sorbonne Paris Cité; Université Paris Diderot, UMR 7154 CNRS/INSU; Paris France
3. Helmholtz-Zentrum Potsdam; Deutsches GeoForschungsZentrum; Potsdam Germany
4. British Geological Survey; Edinburgh UK
5. National Geophysical Data Center, NOAA; Boulder Colorado USA
6. Planetary Geodynamics Branch; NASA GSFC; Greenbelt Maryland USA
7. Directorate of Earth Observation Programmes; ESRIN; Frascati Italy
8. ESA/ESTEC; Noordwijk Netherlands