What does it mean in the report about child's health: "The child's weight is on the chart"?

What is "chart" in this case?What does it mean in the report about child's health: "The child's weight is on the chart"?It is the growth chart that is included in every child's chart that measures the childs weight and height. It graphs the growth of the child from birth to 12 years old to make sure everything is within normal limits. Doctors use it as a reference to see if there are any abnormalities (i.e. lack of growth can be a sign of diabetes etc.) If there are any unusual results the doctor will discuss them with you.