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Fig. 2.

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Ionospheric and solar data during the 23rd solar cycle. (a) Global Daily Mean Total Electron Content (GDM-VTEC) in TECu extracted from CODE GIMs. (b) Sunspot Number as delivered by SIDC. (c) Daily F10.7 flux from Penticton radio telescope observations (red) and derived F10.7P (blue).
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