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.
U.S. Averages 4.5 year old Boy Height: 41.7 average (38.8-43.9) Weight: 38.3 lbs (31.8-45.6 lbs) Note: The range in parentheses is the 5th through the 95th percentile. â¦ Source: Centers for Disease Control and Prevention, National Center for Health Statistics.CDC growth charts: United States.aking the world better, one answer at a time. The average weight gain for a one year boy is to triple their birth weight.