Dwell/Traffic history

(...hoping this is the appropriate forum...)

I hosted fairly well-attended event this past Sunday, a couple hundred guests over the course of six hours, but I hadn't checked back in since then until this afternoon. Is there anyway to view a parcel or a group's dwell/traffic history for a date earlier in this week?

I can, of course, see my group's dividend over the past week, but there's a lot of room for interpretation in deriving traffic numbers therefrom; I'd prefer to work with hard data if at all possible.

Unfortantly there is no exact "Traffic = Dwell * x" since the dwell is calulated based on the ratio of how long they stayed on your land vs other land.

Ah, I use the word 'traffic' in its newspeak sense, as dictated by Linden Lab, where 'traffic'=dwell. I already have a fairly decent estimate of the number of attendees, really I'm looking for the LL-calculated 'traffic' AKA dwell number to get a feel for how that sort of attendance is likely to translate.

('/' in my above post means 'AKA', not divided-by)