These numbers represent the 5 basic outputs of a city. The higher the number, the better. These
numbers are called FIDSI, which stand for:
Food: the basic sustenance used to increase and maintain population
Industry: used to produce buildings or units
Dust: a quasi-magical substance, so precious it has become the currency of this world
Science: used to research new technologies
Influence: Used for important empire-level actions
As some terrain types are more likely to produce certain types of FIDSI, you should adapt your city
placement to make the best of its surrounding tiles. Please also note that your city zone of
influence will evolve over time and will allow you to exploit more of the tiles around it.