What is this?

Maybe it's the heat and my mind isn't working properly- quite possible -but I'd like to know the difference between "logged-in members" and "registered members" in this specific context:

Most logged-in members on ATS at one time: 1,196 on Aug 23 2011 @ 19:45 GMT.
Most registed members on ATS in one day: 7,098 on Aug 24 2011 @ 08:30 GMT

Thanks!


PS. Oh, I think I see. It was AT ONE TIME vs. IN ONE DAY.
Yep, it was the heat after all...
Sorry.