Here is an example summary of this reading selection:

The infographic “Screen Time vs. Lean Time” (created by The Centers for Disease Control) compares the average number of hours children from three age groups spend sitting in front of some form of screen each day. The youngest age group (6-8) averages 6 hours of screen time per day, the middle group (11-14) averages 9 hours, and the oldest group (15-18) averages 7.5 hours. The Center for Disease Control (CDC) recommends that parents ensure that their children have at least one hour of physical activity per day and limit their children’s “screen time.”

Your summary will differ from this one in the way it is written, but it should include roughly the same information.