What is the normal standard value for an infant's head circumference (by period)?

Patient's question:

No

Doctor's answer:

Newborns with full term birth have an average head circumference of 32-34 cm at birth. The increase in head circumference during the first three months of the first year is approximately equal to the increase in the next nine months. That is, 40 cm at 3 months, and 46 cm at 12 months.