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The average usage (Avg Used column value) is computed differently depending on how the usage history data is grouped.
When grouping data is grouped by Day, the average usage is the weighted average of licenses used in particular day. For example, if you use 1 license for 8 minutes, then use 6 licenses for 2 minutes, the average usage is calculated as (1*8 + 6*2) / (2+8) = 2.
When data is grouped by weekWeek, the value displayed is the mathematical average of the weighted averages.
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