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Transfer entropy calculated from surrogate series a), c) and e) of SAA anomalies from Jackson et al. [35] (SAAJ), Gubbins et al. [27] (SAAG) and Finlay [36] (SAAF) respectively and b), d) and f) GSL anomalies. The results show that the statistical significance is higher when the sense of the information goes from SAA to GSL anomalies, also registering greater values of the TE.
