Fig. 2


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Computed asymptotic directions for several NM stations during the sub-GLE event on 29 October 2015. The abbreviations (Tab. B1), the corresponding color lines and numbers indicate the NM stations and asymptotic directions, which are plotted in the rigidity range between the cut-off rigidity and 5 GV. The small oval corresponds to the direction of the IMF derived from the ACE satellite measurements during the event onset.

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