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II.4. Momentary Average Interruption Frequency Index <br />MAIFI is the average number of momentary interruptions a utility customer will experience during a <br />jil&re frame. <br />i1Veti$tal3�i✓ith a duration of <br />MAIFI is calculated by dividing the total number of customers that experienced momentary <br />interruptions by the total number of customers served by the utility. For example, a utility with <br />20 momentary customer interruptions and 100 customers would have a MAIFI of 0.20. <br />ffi&terfitacy bntelmda tion9va mIaL,@nmietcbmated <br />outage management system might not log these interruptions; therefore, some utilities have <br />a MAIFI of zero. <br />RkWEa§.e MAIFI <br />In interruptions <br />Your utility <br />Utilities that use the eReli <br />Utilities in your region <br />Utilities in your size class <br />All <br />NULL <br />Tracker 0.41 <br />0.58 <br />0.42 <br />Mabte%ry MAIFI data from the eReliability Tracker <br />In interruptions <br />All <br />Minimum <br />0 <br />First Quartile <br />0 <br />Median <br />0.06 <br />Third Quartile <br />0.43 <br />Maximum <br />4.45 <br />199 <br />12 <br />