The bars are: black: fouls grey: to red: assists yellow: steals The lines are: blue: boards red: pts green: blocks
Each bar represents a single game (e.g. 11/30 is against the Supersonics), and the overall height of each bar is the number of minutes played. Of course within each bar there are components that correspond to fouls, TO, assists, steals (as MFW2310 already pointed out). The lines are points, rebounds, blocks (again, as stated by MFW2310).