Tons of visitors

[TitanJeff]

I upgraded to 3.7 last week. Until that time, the most people I had ever had on at one time was just under 1,000 with around 45 members and the rest visitors.

A moment ago, I noticed 1,038 on with only 17 members with the rest visitors. Since there is nothing going on which would create this jump in visits (and the counter says none are spiders) why would this happen? Is there some adjustment in the admin cp which needs to be adjusted?

Thanks for any help in advance.