Hrqls: Lol. I forgot the column headings. I'll put them in...
Okay, the Move number and Move columns are obvious. The percentage columns are the expected Wins, Wins by gammon (included in the Wins) and Wins by backgammon (including in Wins and W.G) plus the corresponding Lose percentages.
The Equity, is how GnuBg evaluates the potential earning power of the move. 0.000 would mean that there is as much lost as won. 0.018 would indicate a small gain. The -0.202 in the gammon-save situation means that the roll and move is not good in match terms. Perhaps Alan or Pythagoras can explain that one as I'm still uncertain about what equity means in absolute terms.
The important value from the point of view of judging the relative merits of the moves is the last figure, in brackets. This is the difference in equity between that move and the best move. With the levels that I use anything worse than -0.010 is Doubtful and anything from -0.050 is a Bad move. (Thus move 5 in the gammon-save situation is an error because 24/20 24/18 leaves the player open to several double-taps, which is hardly a gammon saving kind of thing to do!)