Healthy and height-weight proportional

Sam had his six-month check-up this morning and got a clean bill of health. Here are his half-year numbers with HWP stats:

Height: 26 inches (21st percentile)
Weight: 15 lbs, 13 oz (17th percentile)
Head size: 44 cm (66th percentile)

Interesting side note: 

We learned our pediatrician was a comedian in the early-70s, performed at Second City and was roommates with John Belushi. He showed us photographic proof!