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Earth, Planets and Space
Fig. 7 | Earth, Planets and Space

Fig. 7

From: Statistical analysis of ionospheric total electron content (TEC): long-term estimation of extreme TEC in Japan

Fig. 7

CDFs of the daily TEC occurrence estimated with Method I. The occurrence rate, which is the number of days per 100 years, and the occurrence rate in percentage are shown on the left- and right-hand axes of the ordinate, respectively. The black histograms are derived with the normal distribution of 22-year data set of slab thickness and 62-year data set of daily foF2. The blue histograms are derived with the inflated normal distribution of the slab thickness and daily foF2

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