Lies, Damned Lies and 18 Month Checkups

Just the facts, ma’am:

William
Weight: 28lbs 6oz (75th percentile)
Length: 34″ (90th percentile)
Noggin: 50cm (95th percentile)

Andrew
Weight: 27lbs (50th percentile)
Length: 33 1/4″ (75-90th percentile)
Noggin: 48cm (75th percentile)