Questions about the Heroes 4 map editor.

Here is an excerpt from my notes on the fourth game:
The number of guards and resources depends on the difficulty level and the time it takes to capture an object. A month after capturing an object, the population within it reappears and begins to grow. At the same time, the reward immediately becomes the same as it was during the first capture. Artifacts do not change over time; instead, new ones are added.

As I understand it, the total number of artifacts is divided by 10. For example, if the number is 1.5, then on average, you will find 1-2 artifacts per visit. If the number is 0.5, then the probability of obtaining an artifact is 50%.