Retention shows the percentage of new audience that return in the project after a specified time frame. Learn more about the Retention
By default myTracker calculates Retention with a Retention indent equal to 1 hour. So values don't be overstated due to the first periods after audience appeared. The indent is added to the begining and the end of the period retention, for example:
You can set up Retention indent for all myTracker reports at once or for a separate report in the Constructor. For more details, refer to Settings section