What should be the ideal average weight of a six-month-old baby?

At 6 months old, Weight for baby boy: 16.2 - 18.8 pounds Weight for baby girl: 14.8 - 17.5 pounds http://www.babycenter.com/0_your-childs-size-and-growth-timeline_10357633.bc By age 6 months, most babies have doubled their birth weight.