Sure here is another picture
freq high low chart - take 2
To calculate what the frequency count was for the drawing on 07/26/2013 I used the previous 15 draws. 15 is arbitrary you just want a large enough number to get some mixing.
So I use the highlited draws 2-16 to calculate the frequency of individual digits. There should be 45 hits. This is what I came up with frequency for each digit.
0 - 3
1 - 5
2 - 3
3 - 7
4 - 3
5 - 5
6 - 2
7 - 4
8 - 7
9 -6
It should add upto 45 hits total. I next sort the digits from highest to lowest. Some digits have the same hit count so my software always chooses the lowest of the conflicting digits. So 3 and 8 both had hits of 7 and I chose 3 since its lowest. This is arbitrary but with software you have to be specific and I wanted to be consistent.
So the sorted order using above algorithm is
3 8 9 1 5 7 0 2 4 6
So this is the frequency count in sorted order at time of drawing on 07/26/2013 and I highlite which number hit when generating chart. The very top line shows what the frequency count will be for tomorrow's midday drawing.
So their are two arbitrary decisions being made, the number of draws to use, and how to resolve conflicts with digits with same hit count. As long as your consistent in applying rules then it should be fair.
So this process is repeated to calculate the frequency for draw #2 uses drawings 3-17 and so on. You are always using the previous 15 draws to calculate what the frequency count was at the time of the drawing.
Hope that helps. You don't have to use 15 you can experiment with other numbers. I will probably make it configurable in my software. You want a number that captures the current short-term trend which is what we are after.
Jimmy