The sums charts above are good to track your pick-3 games but they can also be used for the pick-4 game. Using the first 3 digits of the pick-4 only you can achieve a very good result.
Each time you note the first 3 digits sums for each p-4 draw.....do one more thing. Using the 4th. digit only you can code that particular sum. Example:
1234 is 123= sum6.................and using the 4th .digit....code 4
567 9 is 567= sum8.................and using the 4th digit ..code 9
Now, after you have coded all of your previous draws, and you notice that each time you had a sum 6.... it hit with an even digit(code digit) the last 4 or 5 or 6 times........well, it's time to look for an odd coded sum 6 the next time it hits ....isn't it? Kool huh ? Same if you saw 4 or 5 low digit code numbers in a row........time to flip and look for high !
A P-4 sum chart is so large it is useless. This is an even number distribution sum chart which is a major advantage over the 1 through 27 chart. How the heck can you tell a sum of 1 is due? In a 1-27 chart there is only one number 001 !
With an even number distribution sum chart like 1-10 You can better anticipate a sum that is due. Thats because it works just like overdue numbers do. Although, sums only show up at one third the rate of normal digits. This is because they show only once a day.... so, a sum #3 that hasn't shown in 30 days is equal to a normal number being gone for 10 days.