Figure 2.

The median value, the interquartile range, and the interdecile range for the glucose levels measured in a person with diabetes are displayed.

For illustrative purposes only, not real patient data.

The glucose levels are quantified in mg/dL (left-hand side) or mmol/L (right-hand side) over a standardized day.

The interquartile range is shown by the darker blue band and represents 50% of the glucose values closest to the median value. The interdecile range is shown by the lighter-blue band and represents 80% of the glucose values around the median.