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Table 3 Estimated parameters for the smoothed f[2− 3 t] component model (summer)

From: Method for modeling of the components of ionospheric parameter time variations and detection of anomalies in the ionosphere

Time period

Parameters of the model for the 1st difference of the smoothed component

First parameter

Second parameter

07.06.1979–24.06.1979

−0.4032

−0.4099

20.06.2001–07.07.2001

−0.5268

−0.5916

18.06.2002–06.07.2002

−0.6156

−0.6099

General model parameters (solar maximum)

−0.50

−0.58

20.06.1984–10.07.1984

−0.8254

−0.6382

28.06.2004–17.07.2004

−0.8485

−0.7834

13.08.2007–01.09.2007

−0.9465

−0.9156

General model parameters (solar minimum)

−0.83

−0.73