magnetic records obtained at low latitude geomagnetic observatory of muntilupa in Philippines for the year 1962 are are analyzed for day-to-day variability previous relevant works on geometric variations are reviewed. direct measurment of day-to-day variability is made.new aspects of day-day-day variability has some diurnal and seasonal variation.day-to-day variability exists during the night-time. Quiet day-to-day variability has smooth variation while occasional erratte variation characterized disturbed days. Day-to-Day varibilities in the three elements H,D and 2 vertain degree of correlation with one another on quiet days. It is suggested that day-to-day varibilities is a reflection of solar quiet daily variation, sq and this suggestion common cause for the two phenomenon.
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