Those look like figures I've seen for television viewers of the sports. Basketball does the best, as you might expect, but even its average viewer is over 40. I remember being surprised at the NFL number, but one must remember that a lot of younger folks follow the sport and play in fantasy leagues or bet on games legally or illegally, but do their viewing through the NFL's own "Red Zone" channel, which allows them to look at all the games at once, but only when action is inside the 20-yard line. It's akin to joining soccer matches only for corner kicks, free kicks and action in the box, omitting all the build-up, goal kicks and attacks that sputter out in the midfield. People watching Red Zone contribute to the ratings of none of the games they see.