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Value ~6 means that data group <=2013 of InfoProvider data has a really low reporting usage, so the potential of this InfoProvider to be archived is high.
How to switch on weighted average
You can choose between the option to perform the calculation based on weighted average or based on the sum of InfoProvider data parts. By default the system uses the sum, but you can change this in expert settings.
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Results are going to be recalculated after next execution of the collector. (The Monitoring profile HMBW_1DAY)
Why the number of InfoProvider usage can be higher than sum of it's data groups
Sometimes it can happen that we obtain the following record as a result of the Data distribution analysis:
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What we can see from the above filters, is that user tried to read data from 2016, but the InfoProvider ZCUBE_XY doesn't have any data in 2016 data group, therefore the usage has the value 0 in the record. If you want to know, why the object ZMONTH wasn't used, you can check the section Additional Time Characteristics.