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Fig. 12a.

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The ionospheric conditions over three DIAS stations during a quiet (left) and a disturbed day (right). The observed foF2 is plotted in green, the minimum critical frequency of the F-Layer (fmin) is plotted in yellow, while with blue we provide values of the foF2 predicted with the SIRM model. The specific data presented in this example are not included in the SIRM fit.

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