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Class 5: The Solar Cycle
Yearly mean total sunspot number (1770–June 2026). Data source: WDC-SILSO, Royal Observatory of Belgium, Brussels. DOI: https://doi.org/10.24414/qnza-ac80. This data is licensed under CC BY 4.0.
In this class, students identify patterns in social trend data and geomagnetic data to determine the length of the solar cycle.
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