This article has an erratum: [https://doi.org/10.1051/swsc/2021015]
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The GIC data coverage for this study. The top panel gives the F10.7 solar flux in solar flux unit (sfu), where a sfu is 10−22 W m−2 Hz−1. The bottom panel gives the universal time (UT) of Mäntsälä in the vertical axis and year in the horizontal axis. The legend for the lower panel color figure on the right shows the numbers of 10 s GIC observations during each UT-year sector.
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