Answer:
Users that had at least one session on your site in the given date range
Explanation:
UserMetrics is use to measure user activity based on a set of standardized metrics. Using user metrics, a set of key metrics can be selected and applied to a cohort of users to measure their overall productivity. User Metric is designed for extensibility (creating new metrics, modifying metric parameters) and to support various types of cohort analysis and program evaluation in a user-friendly way.
