The definition of the metric can be referenced from the view during the practice session showing the graphic of the driving range with the metrics display from left to right for you to slide across to scroll through.
Simply press and hold your finger over one of the metrics and you will then see the definition of the metric displayed on screen.
You can also view your session through the Garmin Golf app after ending and saving. Open a session in the Golf app, select a shot and you will then see the graphic of the driving range in 1st person view, where you can tap the three horizontal bars icon at the bottom of the graphic, and from the menu change the view to "data". Once you ball/club metrics are displayed, hold your finger down on the one of the metric and you will then see the definition of each metric.
