Header	Definition
`pfr_player_id`	Player identification code at Pro-Football-Reference.com
`player_name`	The player's name
`career_try`	Career True Receiving Yards
`career_ranypa`	Adjusted Net Yards Per Attempt (relative to average) of player's career teams, weighted by TRY w/ each team
`career_wowy`	The amount by which career_ranypa exceeds what would be expected from his QBs' (age-adjusted) performance without the receiver
`bcs_rating`	The number of yards per game by which a player would outgain an average receiver on the same team, after adjusting for teammate quality and age (update of http://www.sabernomics.com/sabernomics/index.php/2005/02/ranking-the-all-time-great-wide-receivers/)

try-per-game-aging-curve.csv contains receiver aging curve definitions.

Header	Definition
`age_from`	The age (as of December 31st) the player is moving from
`age_to`	The age (as of December 31st) the player is moving to
`trypg_change`	Expected change in TRY/game from one age-season to the next