Hi There.
I look at many charts in the software. Chart 3 (C3) is a very good indicator to start off with. When all game history is updated from the game I play, I hover the mouse over the most current draw Sum column. There I will see percentages. I use those percentages for the sum of the next draw.
For example, I like to work with the MI 5/39 Game. When I see a percentage of 50/50 or sort of close to it, my thoughts on the sum for the next draw could be higher or lower than the most, current, game drawing. If I notice an extreme difference in the percentages, I'll focus on the higher percentage for the next drawing's sum.
Say in the MI 5/39 game the last sum was above 125, I would focus on lowering the next sum into the range limits of 75-125. Why??
Because most of the sums appear in that range of 75-125. For sure, on occasion I'll see a fluke sum appear after what I anticipated what should occur, but I believe it's a rarity, it doesn't happen very often.
Chart 4 (C4) is where I keep my range of sums at, (75-125) for the MI 5/39 game. You would need to view C4 to determine what the sum range is for the game you play.