Showing only certain entries in a table

[QlikSensor]

Hi,

I have a dimension called project. Another calculated field shows the average quality level of each project. 

I want to show in a table those projects which have the best average quality level. The best project can be just one project or several project which share the same (best) quality level.

How can I do this?

This statement lists the average quality level:

Avg ({<[Initial Quality Level]-={0}>}[Initial Quality Level])

This statement finds the maximum:

Max(all aggr(Avg ({<[Initial Quality Level]-={0}>}[Initial Quality Level]), [Initial Quality Level]))

And this formula shows in the table for each project whether it has the maximum level or not

Avg ({<[Initial Quality Level]-={0}>}[Initial Quality Level]) = Max(all aggr(Avg ({<[Initial Quality Level]-={0}>}[Initial Quality Level]), [Initial Quality Level]))

But I don't know how I can filter the project dimension with this formula. Any help?