Spatzimaus
Mad Scientist
(Combat Type Value * (1 + 2,5*Era 'StartPercent')
Do NOT use StartPercent, if you can avoid it.
StartPercent is the percentage of the maximum number of turns at which you start the game if the user, in an Advanced Start, selects an era later than Ancient. So if a Standard game is 500 turns, and someone picks an Industrial start (StartPercent=50), then the game will start the game on turn number 250 (1700 AD) instead of in 4000 BC. That's all this value means, nothing more; if you start the game in the Ancient Era, then it'll never use this value for anything.
Why is this bad to key off of? Well, take my own Alpha Centauri mod. Because I upped the maximum number of turns to 1000 on Standard speed, to take advantage of my three new Eras and some altered scaling of research rates, the Industrial era now has StartPercent = 34, I think, so that it'll start on turn 340 (1680 AD with my altered turn numbers). I'm still tweaking the numbers involved, but it'll stay in that range.
The point is that StartPercent is a purely relative value, only useful in the context of the GameSpeed turn number settings, so any mod that changes it (like mine) will do so because it also changed values in other tables to compensate, and you're not accounting for those other changes.
It's better, IMO, to just use the Era ID numbers (0, 1, 2, 3, etc.). So Industrial would always be 4, unless another mod adds a prehistoric era and shifts the existing eras up one notch.