Can anyone explain how base production of a province is calculated?

[byebytoad]

I thought that the 'base value' of a good produced in a province was directly dependent on the 'production development of that region + eventual bonus given by manufactories.
But comparing the production of diamonds in my province ,Siena, with an indian province I had to come to realize that there are other factors unknown to me,

My province ,Siena has : a production development of 23 (50 in total), has a Mill which gives +1 production, an a 'local diamond district modifier ' which gives an additional +.5 good produced as also has a Counting House.

Indian province of Golconda has: a production development of 8 , no Mill and no Diamond district and only a workshop vs the counting house in Siena.

Considering the lack of Mill and diamond district bonus and the huge difference in production development (23 vs 8) I
thhought there would be a great difference in the 'base value of good produced.
And yet the difference is minimal: 6,1 vs 5,6.
Why?

 

[roooo]

Golconda has a modifier like the estuarys or local center of trade that gives them + goods produced in golconda

 

[Badesumofu]

23/5 = 4.6+1+0.5 = 6.1

So Sienna looks right. Counting House and Workshop have no effect on goods produced, they just increase production income. Not sure why Golconda has 5.6 though. 8 production dev should yield 1.6, so there is likely some other modifier there you have missed.

 

[Brynjar]

As roooo points out, Golconda has the "Diamonds of Golconda" modifier, giving +4 goods produced. That equals the production of an extra 20 development. There are various other modifiers which may give small bonues/maluses to goods produced.

 

[byebytoad]

23/5 = 4.6+1+0.5 = 6.1

So Sienna looks right. Counting House and Workshop have no effect on goods produced, they just increase production income. Not sure why Golconda has 5.6 though. 8 production dev should yield 1.6, so there is likely some other modifier there you have missed.

Sorry you're right, reading your post I looked at the province modifiers, and Golconda seems to have a modifier called "diamonds of Golconda' which gives +4 goods produced.