For the manual, I don't understand the first chart, the others I get.
The city/extractor ones?
City level: The level of the city ofc
Production increase (this level alone): How much it increases your production to upgrade from for example level 5 to 6 (the value here is under level 6) or from 3 to 4 (under level 4).
Total zone production: How much the entire zone produces. If you have 3 levels, it says what the zone produces under level 3. That would be the production of the empty zone plus the production of level 1, 2 and 3 alone.
As for the map, kol. But the resolution was also increased. If there are too many zones, we will end up having to spend ages calculating everything. I don't think that is as fun.