Statistics and Most Users online

This statistic shown on the Who is Online section at bottom of my forum's homepage is not incrementing to a larger #. It has stayed at 8 and just yesterday there were more than 13 users who logged into the forum. Does this mean online all at the same time or logged in in one day?
Thank you,
RTHawk
16steps.niceboard.com

For the who is online at the moment you have the "Registered Users:" section.
There is also the "Members connected during last X hours" option. That show all the members that have logged in on the forum iin the last X hours. I say X because you can change that time form admin panel=>General=>Homepage=>Configuration from the "Period in hours" box

Thank you for your prompt response. Sorry I was not more clear.
I am specifically referring to the "Most users ever online" statistic. It remains at a very low # and a date long ago. I see that I am able to reset that to zero at one place in the admin panel which I don't want to do unless this will reset the feature, however, that # and date should have incremented to a larger # and newer date.

I see from this forum that data is old too:
Most users ever online was 392 on Fri Jun 08, 2007 7:18 pm

it means online at one time, not through out the course of the day

Thank you.