Space Climate
Open Access

Fig. 21.


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Helium count rates and ratio from CELIAS/STOF onboard SOHO from 31 July to 8 August 2010. Filamentary plasma is estimated to arrive on 3–4 August. Count rates in 100–300 keV energy range are marked as star for He+ counts, triangle for He++ counts and circles for the He+/He++ ratio (courtesy: Dr. Martin Hilchenbach).

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