Uhm...the table totally lays it out as 3 for Professional (0=untrained, 1=beginner, 2=novice, 3=professional, 4=veteran, 5=expert, 6=elite, 7=Legen...wait for it...dary).
Attributes are another matter (you have to add your metatype's modifiers to get an accurate result) and certain fields should have different standards, but for a basic (1=weak, 2=undeveloped, 3=typical, 4=improved, 5=superior, 6=maximum potential). Maximum potential should be relatively rare, and a 5 should be someone you'd definitely remember.
From the archetypes, it seems the planned average was around 9-12 which is still a great deal above your typical guy. Of course with power creep that has kicked in, you can accidentally hit your head on 15-18 without trying in some skills.
My bad. Time to re-read the core book, my knowledge is leaking out my ears.