A program for calculating the strength of the guard on random maps in Heroes of Might and Magic III, called H3CalcGuards.

I entered it into the program – it seems like 19 is a normal number, while 14 is impossible: screenshot
The opposite happens if you don't specify information about the types of towns.
That is, on the map you sent, everything is fine, but where there were 14, it's possible that it's not working.