| fp_page | character | The relative url that the data was scraped from (add
the prefix https://www.fantasypros.com/ to visit the page) | 
| page_type | character | Two word identifier separated by a dash identifying the
type of fantasy ranking (best = bestball; dynasty; redraft) and what
position it applies to | 
| ecr_type | character | A two letter identifier combining the ranking type (b =
bestball; d = dynasty; r = redraft) and position type (o = overall; p =
positional; sf = superflex; rk = rookie) | 
| player | character | Player name | 
| id | character | FantasyPros ID | 
| pos | character | Position as tracked by FP | 
| team | character | NFL team the player plays for | 
| sportsdata_id | character | ID - also known as sportradar_id (they are
equivalent!) | 
| player_filename | character | base URL for this player on fantasypros.com | 
| yahoo_id | character | Yahoo ID | 
| cbs_id | character | CBS ID | 
| player_image_url | character | An image of the player | 
| player_square_image_url | character | An square image of the player | 
| mergename | character | Player name after being cleaned by dp_cleannames -
generally strips punctuation and suffixes as well as performing common
name substitutions. | 
| tm | character | Team ID as used on MyFantasyLeague.com | 
| scrape_date | Date | Date this dataframe was last updated | 
| ecr | numeric | Average (mean) expert ranking for this player | 
| sd | numeric | Standard deviation of expert rankings for this
player | 
| best | numeric | The highest ranking given for this player by any one
expert | 
| worst | numeric | The lowest ranking given for this player by any one
expert | 
| player_owned_avg | numeric | The average percentage this player is rostered across
ESPN and Yahoo | 
| player_owned_espn | numeric | The percentage that this player is rostered in ESPN
leagues | 
| player_owned_yahoo | numeric | The percentage that this player is rostered in Yahoo
leagues | 
| rank_delta | numeric | Change in ranks over a recent period | 
| bye | numeric | NFL bye week |