The table below shows our latest standards. The average values in the table are medium and the lowest and highest values are in parentheses. 1-month average (range) Gender Height (cm) Weight (kg) Head circumference (cm) Male 54.8 (51.0-58.8) 4.51 (3.58-5.60) 36.9 (34.6-39.3) Female 53.7 (50.0-57.5) 4.20 (3.38-5.27) 36.2 (33.9-38.5) 2-month average ( Range) Gender Height (cm) Weight (kg) Head circumference (cm) Male 58.7 (54.6-63.0) 5.68 (4.53-7.05) 38.9 (36.6-41.4) Female 57.4 (53.4-61.6) 5.21 (4.21-6.51) 38.0 (35.8-40.4)