Gann's Square's are some of the best known tools created by Gann. His most well known square was his Square of 9.
The reason for this was because of the symmetry 9 had with itself. Gann was able to balance both price and time with this symmetry. - 9 is the last single-digit and largest number - You can add anything to 9 and it will give you a natural number - (9 + 3 = 12); 1 + 2 = 3... (9 + 9 = 18); 1 + 8 = 9... etc. - Multiplying any number by 9 will have the natural number be 9 - (9 * 6 = 54); 5 + 4 = 9... (9 * 3 = 27); 2 + 7 = 9... etc.
For these reason, Gann claimed that 9 has everything within itself.
Here I have created an on-chart square of 9 including the cardinal and ordinal cross points colored. In the settings you are able to customize the starting value of the table as well as the period movement. In most cases, 81 is not high enough to be useful in charting cases, so I'd recommend printing out your own Gann Square of 9 that goes as high as you need it to go.
THIS IS NOT TRADING ADVICE; please use your own technical analysis before making any decisions based off of public indicators. Learn more about Gann's Squares before attempting to use them as this script was not meant to give you answers, only the table.