Long-term observation of magnetic pulsations through the ELF Hylaty station located in the Bieszczady Mountains (south–eastern Poland) | Journal of Space Weather and Space Climate

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Fig. 2

Last 10 cycles of solar activity expressed in terms of the yearly SSN. Research carried out in this study cover the last cycle of solar activity seen in the figure. Source of the SSN: WDC-SILSO, Royal Observatory of Belgium, Brussels.

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