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Atlas of Fourier Coefficients of Diurnal Variation of FoF2
註釋This atlas is devoted to the study of amplitude and phase from the diurnal analysis of foF2 monthly median. It is concerned with their variations - both systematic and random - as functions of latitude, season and solar activity. The atlas contains a series of graphs of the distribution of amplitude and phase and tables of phase distribution for four seasonal months of high and low years of solar activity. Emphasis is placed on the study of the phase distributions for determining the optimum separation of harmonics produced mainly by noise from those representing mostly real physical variation.(Author).