Snapmirror logs

Hi -  i  am running OnTap cDOT 9.1P7.

I need to gather information for every snapmirror transfer which has completed and is still in the logs. I want to generate a single text file with the following fields

RelaionshipID:Start timestamp:FinishTimeStamp:TransferSize:TransferStatus

There are many logs and i can't seem to find any clear 'Start' and 'End' in the logs

Can anyone help me identify these fields so I can write some code to extract the data?

Thanks!