Age on February 1 of that season, the league's convention.

A box-score rating set to a league average of 15. Rewards volume and is largely blind to defense.

Scoring efficiency counting twos, threes and free throws together. From nba.com's possession data from 1996-97 on, basketball-reference before that. The two agree to within a rounding error.

Share of his team's possessions a player finished while on the floor. From nba.com's counted possessions from 1996-97 on, basketball-reference's pace estimate before that, which runs about half a point higher league-wide.

Wins credited to a player's offense.

Wins credited to a player's defense.

An estimate of how many of his team's wins a player produced.

Estimated offensive points added per 100 possessions vs. a league-average player.

Estimated from the box score, which records little of what defense actually is.

Estimated points added per 100 possessions vs. a league-average player.

Box plus/minus scaled by playing time, measured against a bench-level baseline.

Possessions he was on the floor for, counted from play-by-play.

Points his team scored per 100 possessions with him on the floor.

Points his team allowed per 100 possessions with him on the floor.

His team's points scored minus points allowed per 100 possessions with him on the floor.

Share of his teammates' field goals he assisted while on the floor.

Share of available offensive rebounds he took down.

Share of available defensive rebounds he took down.

Share of all available rebounds he took down while on the floor.

Turnovers per 100 possessions he used.

Possessions his team played per 48 minutes with him on the floor.

His share of everything measurable that happened in his games. Roughly 10% is an average starter.