Info about spread hit radius as unit spread differs much even more due to a23 balance changes in D834 in archery tech and unit upgrade to advanced grade and from unit to unit as f.e.
catapult spread 4.0, archer horse 3.0, skirm 4.0, hero champ infantary unit 0.5, champion archer 1.0, defense tower/cc/.. 1.5.
@elexis made already a patch for a21 #4421 i just ported to a23
and @temple made some accuracy graphs https://wildfiregames.com/forum/index.php?/topic/22717-accuracy-graphs-for-ranged-units/
and i made some screenshots https://imgur.com/a/SSF4C
so info added "Spread Hit Radius: [Spread] meter at [Elevation adapted range] meter" as spread is calculated to distance to target we take in account that he can hit that as maximum.