There is a TDI chart per area (example TDI chart #13 is Hawaiian Islands) and the TDI chart number (13 in my example) has nothing to do with the trading power.
Only the values (TDI 50 to 150) inside the TDI chart are part of the equation of the trading power.
There is a TDI value per week. A TDI of 100 as example in 2 different areas doesn't means that both area have the same trading power nor all resorts in the same areas have the same trading power.
The TDI is just a variable of the unknown equation of II for the trading power.
II provide the TDI chart number for each resorts (click the travel demand index link under resort information of each resort to open the pop-up chart).
You can get all TDI charts in one place in the II TDI Charts section of my Spreadsheet
https://docs.google.com/spreadsheet...8NPz0Pmm6KZZYcVsMoMIrwenxcIYwT2gD62Y/pubhtml#
Here is what you will see when you will click on the travel demand index link of a resort on II
My spreadsheet looks like this
If you click on a chart number like 13 as example, you will get this