Percents for AVG and SLG were based on at bats. Percents for 2B, 3B, HR, SO and BB were based on plate appearances. The purpose of his formula was to create the ultimate statistic characterizing the total offense production of a player. However, it favors players with more games played, so for example, George Brett's .390 batting avg season ranks as his 2nd most productive even though it was easily his most productive per plate appearance. So, I calculated OPS too for comparative purposes.
Relative indices represent the percent above or below the league average for that season.
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