I count daily visitors, have unique names. Users want to have the statistics, where they see average Distinct weekly visitors in a month. Lets say first week I had 11 distinct Visitors . Next week I had 15 distinct visitors. So the proper calculation would be that I had (11+15)/2 = 13 .. on avarage in one week I had 13 distinct visitors. Is it possible to do this in Pivot report? It gets more complicated when I have the whole month andin this month 4.5 weeks, I have then to do the maths as:(11+15+12+17+6)/4.5. Any idea how to do this?

Rg Gorazd