Reputation earned per month from questions at least 10 days old at the time of vote. (Use the graph tab!)
Q&A for amateur radio enthusiasts
select sum(case when v.VoteTypeId = 2 then 10 else -2 end) as [Votes], DATEPART(Year, v.CreationDate) as [Year], DATEPART(Month, v.CreationDate) as [Month] from votes v inner join Posts p on v.PostId=p.id WHERE p.OwnerUserId=##UserId## and v.VoteTypeId in (2,3) and datediff(day, p.CreationDate, v.CreationDate) > 10 group by DATEPART(Year, v.CreationDate), DATEPART(Month, v.CreationDate) order by [Year] DESC, [Month] DESC