It's hard to say for certain without a specific example, but it sounds like what you're calling footnotes are the tallies for the various tiebreaking rules.
Those are the Rule 7 tallies. You'll find, for example, that the numbers in the parentheses for tango are the sum of the first through fourth place marks for those couples.
It's hard to say for certain without a specific example, but it sounds like what you're calling footnotes are the tallies for the various tiebreaking rules.