I watched the show and did not hear any mention about whether that calculation was Patty's standing height or her walking height. Gigantofootecus, in the attached review report below, mentions that the average human's walking height is 8%-10% lower than standing height. He also mentions that Patty, because of her compliant walk, has an 18%-20% variance.
I'd want to know whether the 6'3" height conclusion is her walking height or whether it has taken into account her compliant-walking variance into account, and, if so, at what percentage. Below is a link to Gigantofootecus' discussion about this very issue.
http://www.readclip.com/crypto/review.htm