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Auxiliary material for this article contains a figure that shows annual autocorrelation measures of recurrent geomagnetic activity derived from historical ground-based magnetic observatory data.

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grl28943-sup-0001-readme.txtplain text document1Kreadme.txt
grl28943-sup-0002-fs01a.pdfPDF document72KFigure S1. Annual averages of Pearson autocorrelation lambda of the geomagnetic-activity aa index as a function of integer-day lag lambda, 1868–1888, 1889–1909, 1910–1930, 1931–1951, 1952–1972, and 1973–1993.
grl28943-sup-0003-fs01b.pdfPDF document69KFigure S1. Annual averages of Pearson autocorrelation lambda of the geomagnetic-activity aa index as a function of integer-day lag lambda, 1868–1888, 1889–1909, 1910–1930, 1931–1951, 1952–1972, and 1973–1993.
grl28943-sup-0004-fs01c.pdfPDF document71KFigure S1. Annual averages of Pearson autocorrelation lambda of the geomagnetic-activity aa index as a function of integer-day lag lambda, 1868–1888, 1889–1909, 1910–1930, 1931–1951, 1952–1972, and 1973–1993.

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