This graph is displayed by clicking the button, or selecting it from the View menu. It shows the distribution of readings by time of day.
The numbers along the left edge of the graph are blood glucose values. The upper limit of the graph adjusts automatically to accommodate the range of readings to display. The horizontal dotted lines show the target range. The horizontal dotted lines show the target range. Across the bottom is the time of day, with earlier hours to the left. Twelve O'clock noon is at the center of the graph.
This graph can be resized by dragging an edge or corner of the window with the mouse.