1. Observatori de l'Ebre (OE), Univ. Ramon Llull — CSIC Roquetes Spain
2. Universidad Complutense de Madrid (UCM) Madrid Spain
3. Instituto de Geociencias (CSIC‐UCM) Madrid Spain
4. Department of Physics Catholic University of America DC Washington USA
5. NASA Goddard Space Flight Center, Heliophysics Science Division MD Greenbelt USA
6. National Institute of Nuclear Physics University of Rome Tor Vergata Rome Italy