Space Climate
Open Access

Fig. 3.

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(a) The fit of a regression line (solid line) with the 95% confidence bands (dashed lines) to the histogram points of number of sunspot groups creating one cluster from the northern and the southern hemispheres for the ascending phases of solar cycles in the log-log scale plot. The correlation coefficient and the regression equation are presented in the right lower corner. (b) The same, but for the maximum phases of solar cycles. (c) The same, but for the descending phases of solar cycles.

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