Figure 2. Time in Range 70–180 mg/dL (3·9–10·0 mmol/L) By Hour Over 24 Hours.

Figure 2 shows an envelope plot of the percentage of time that the glucose level was within the range of 70 to 180 mg per dL (3·9 to 10·0 mmol per liter), as measured by continuous glucose monitoring, according to the time of day. Symbols denote the hourly median values, and the shaded regions are defined by the 25th and 75th percentiles.