I decided to put all these heights into a quick Excel doc to see how full of stuff the BLF is. Turns out, not very.
I made a few assumptions in this--namely that everyone here is a US-born White Male. Come at me Tumblr:

Now, this is actually a little fishy because I assume some Asians/Hispanics answered and also some women. Also, since the majority of people here are teenagers, it should also be slightly below average. But this could also be excused with the small sampling size.
Would be interesting to try this with snake length.