Fig. 4


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Parameters of the northern and southern dipoles. (a) Strengths of the northern and southern dipole for the three solar minima (1975–1976, 1985–1986 and 1995–1996). The southern dipole is stronger than the northern dipole during all three solar minima. (b) Locations of the northern and southern dipoles in solar latitude (southern latitudes are reversed to positive).

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