Powershell Query to Analyze your Mailbox Movement

I've recently been doing an Exchange 2007 to Exchange 2013 migration and wanted to find out the kind of speed the mailbox moves were taking.  I used the below Powershell script to pull out the MB transfer speed per minute:

Get-MoveRequest | Where { $_.Status -eq “Completed” } | Get-MoveRequestStatistics | Select DisplayName,TotalMailboxSize,TotalMailboxItemCount,@{n=”Speed MB/min”; e={ [int]($_.BytesTransferred.ToMB() / $_.TotalInProgressDuration.TotalMinutes) }}