Morka J.C, Molua O.C and Nwachuku D.N
Day-to-Day Variability is some ionospheric parameters in the quiet equatorial ionosphere, case study: foE is hereby presented. The diurnal variation curve of foE showed a symmetrical one with a peak value at noon. The seasonal variation curve of the foE has two maximum points in the months of April and August. It is also shown that for short time variation, the day-to-day variability in the E-region of the ionospheric critical frequency, foE is not due to season nor relative sunspot number Rz. The test of significance carried out between the standard errors of foE before and after correction showed no significant difference at 95% level of significance.
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