It''s a reasonable question, but if we had to guess based on the various "shall I instruct them on how to use a tampon" questions, as well as other evidence, I would estimate that Yanny's pedophilia tends to focus around the 10-13 year old range as an ideal--though he is willing to settle for a bit older if that is all he can get to show him a bloody used tampon or pad.
i have to admit this is not based on any rigorous statistical studies, but just on the general sense I get from hanging out here for what must be a couple of years now. So technically, this would encompass teens.
Now people please don't take this the wrong way (I don't roll that way believe me) but what would you say is the "average" age girls reach menarche these days? Is it pre-teen like 12 or 13? I only ask because I do not have any daughters and it is clear that Yanny's ultimate fantasy is to encounter a girl having her first period and "instruct" her how to use a tampon.