For the second group of areas (which included 10 areas with valid data), the EPAâs analysis calculated an average across the areas of maximum monitor annual mean concentrations, averaged over 3 years, of 14.8 mg/ m 3 compared to an average of composite monitor concentrations of 14.2 mg/m 3 (Frank, 2012a, Table 3).
Updated February 24, 2017. The mean or average birth weight in the United States is about 3,389g or 7 lb, 7.5 oz. However, any birth weight of a term newborn between 5 lbs, 8 oz and 8 lbs, 13 oz is considered to be normal. Baby Birth Weight Statistics.
Average Height to Weight Chart for United States Youth Girls Age (inches) Average Height Weight (lbs.) Newborn 7.16 1 month 9.15 2 months 10.91 3 months 12.56 4 months 14 5 months 15.43 6 months 16.53 7 months 17.64 8 months 18.74 9 months 19.62 10 months 20.28 11 months 21.05 1 year 28 - 29 21.76 13 months 22.27 14 months 22.82 15 months 23.26 16 months 23.7 17 months 24.14 18 months 24.58 19 months 25.02 20 months 25.35 21 months 25.79 22 months 26.12 23 months 26.57 2 years 30 28.4 3 years 33 30.8 4 years 37 35.2 5 years 40 39.6 6 years 41 46.2 7 years 43 50.6 8 years 45 57.2 9 years 47 63.8 10 years 51 70.4 11 years 52 79.2 12 - 13 years 60 - 63 95 - 105 14 - 15 years 63 - 64 105 - 115 16 - 17 years 64 115 - 120 18 - 20 years 64 125 - 130 Boys Age Average Height (inches) Average Weight