Audit Log - How long will it display content for a Public account?

I’m trying to locate a workflow issue for a client that happened about 5 hours ago and thought I’d atleast be able to see today’s activity. The date range shows a 24 hour time frame but I’m unable to page to the previous page to see if the data for my time frame will appear.

As a public app user how much data are we allotted in audit history?

Please contact for help with this. I have no idea.