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The MRD (%) between SWIF’s forecasts and actual observations in respect to: (a) time, from 1998 to 2007 that corresponds to the temporal evolution of the solar cycle 23 and consequently to the solar activity level; and (b) geomagnetic activity level, latitude and prediction step (b) during solar cycle 23. The ionospheric activity level is indicated as “quiet (q)”, “moderate (m) and “disturbed (d)”, while the latitudinal dependence is explored in two latitudinal zones: middle-to-high (MtH) and middle-to-low (MtL).
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