Concurrents: The total number of people on your site at any given moment, as measured by the number of simultaneous open browsing sessions to your site.
Note that this number includes both engaged and non-engaged browsing sessions open to your site. An engaged session in Chartbeat represents an active user session where the visitor has directly engaged (clicking, scrolling, typing, mousing) with your page in the last 15 seconds. A non-engaged session represents an open browser tab to your site where the visitor has not shown any signs of engagement within the last 15 seconds. If an open browser session to your site shows no signs of engagement for two continuous hours, we will stop tracking the session as a concurrent at that point.
Pageview: An instance of a page being loaded (or reloaded) in a browser, or other platforms where Chartbeat tracking is implemented. Pageviews is a cumulative metric defined as the total number of pages viewed.
Note that a single user can record multiple pageviews in the same browsing session; if a user navigates to a different page and then returns to the original page, a second pageview is recorded as well. Pageview and Unique impression running totals in the Real-Time Dashboard begin at midnight (12:00:00am) in the time zone that your domain is set to.