# Estimating User Counts

WAN Insights determines the number of hourly active users as follows:

* Count the number of different source and destination IPs for network traffic on every site – on an hourly basis.
* Consider a week of hourly numbers and take their 80th percentile. This number is representative of the number of users during activity hours for the past 7 days.

You can see hourly vs weekly as follows:

* Hourly users is shown on the recommendation detail timelines
* Weekly average user counts appear on the recommendation summary cards.
* The weekly average is calculated once a day, using a rolling 7-day time window.