World Penis Size, from a medical Professional

So, I've had quite a number on the penis size of the world map... but the mystery still remains what does the key really mean!  So I did a bit of research this morning and found the following website http://www.andromedical.com/.  Dr. Eduardo A. Gómez de Diego of Andromedical decided that it was a worthwhile study to look into the average penis size and found studies from around the world (note, he also sells penis enlargement products so take it all with a grain of salt)  But see his findings below - with source studies noted!  It's all legit.