We are looking for a report which needs last 3 months historical data of opening and pending tickets ageing separately.
For Ex: Ticket # 3 is pending in last week, i need the ageing of the ticket in last week in Pending Ageing, but this it is open it should be in Open Ageing.
So, report should know show current interval ageing in current week and last week interval ageing on last week ageing.
In the eazyBI Demo account, there is the report of Average age till resolution. There is a similar measure that you are looking for - Average age of Open issues. For all the open issues, this measure calculates the time from issue creation until the end of the period, or until now() for the current period.