I want to see more details which blog posts were visited by month or week. In Excel I would use a Pivot table or group the data by the period. Pivot tables are not available - I just did a feature request.
Is there any other way I could do a report for what I want?
If you want to compare more records at the same time, the mentioned pivot table would indeed be required. Remember that you can always export all the data to a sheet and do further analysis there.