Hey Tamur,

Nice start there! I'll try to chip in if I can I'll have to do some test myself later. A couple of quick comments though:

1. Isn't the effect instantaneous? (after you pull out a governor?)
2. How about comparing goods traded from one province to the other? There's a trade detail screen there that breaks down Imports and Exports so I guess you can track the trade income there.
3. I think you have to use un-governored towns and and normal tax just to get the basic data, because governors introduce alot of additional factors there.

Also do you mean to say, you want to get an equation involving the tax income? I'd like to find a trend for that too!

Right now, I've looked at corruption like therother, however, one thing I'm frustrated with is the lack of equation that I can tie with the in-game data. For example: 25% distance always get ~ 16% corruption. 20% distance get ~14% etc but putting a legible equation, I've no such luck.

Anyway, drop some more info once you find some and hopefully, we all can cull resources.