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Fig. 4


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In panel (a), from up to down, are reported the Solar flux F10.7 from 09 to 16 July 1985, and the IMF magnitude and Z component evolution for the same period. In panel (b), from up to down, are described respectively the AE index, the a p index and the Dst index, from 09 to 16 July 1985. (The hourly AE index data are retrieved through the Kyoto AE index service Three-hour a p data are provided by NOAA Dst and Solar data are obtained from NASA Goddard Space Physics Data Facilities OMNIWEB:

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