How much is the development standard of 8 months baby

Eight-month-old male baby weight between 6.046 kg to 12.6 kg, height between 63.9 cm to 78.9 cm, head circumference between 41 to 48.9 cm, mainly and genetic and acquired development, if the patient's stature is relatively short, can be acquired through the diet and trace element supplement to promote growth and development.