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Earth, Planets and Space
Fig. 5 | Earth, Planets and Space

Fig. 5

From: Extreme geomagnetic activities: a statistical study

Fig. 5

Cumulative distribution function of ~ 6×104 substorms identified by SuperMAG for time interval 1986 to 2019. The data points are displayed at even intervals in logarithmic scale. Log-normal and power-law fits are shown by thick and thin solid curves, respectively. The best fitted parameters are α = 7.1, μ = 2.7, and σ = 0.22

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