NPCs composing that spawngroup :

an_emaciated_zombie (50%)

a_vicious_skeleton (50%)

NPCs spawning around that spawngroup :
(Max range : 200)

gunthak2240336, range=195 (-666,-390,19)

a_pestilent_troll_zombie (50%)
a_vicious_skeleton (50%)

gunthak2240338, range=56 (-784,-190,19)

gunthak2240339, range=81 (-651,-223,19)

an_emaciated_zombie (50%)
a_savage_skeletal_sailor (50%)

gunthak2240352, range=78 (-724,-283,20)

a_pestilent_troll_zombie (50%)
a_vicious_skeleton (50%)

gunthak2240366, range=94 (-807,-150,19)

an_emaciated_zombie (50%)
a_deadly_skeletal_sailor (50%)

gunthak2240371, range=98 (-709,-109,19)

gunthak2240380, range=120 (-731,-85,20)

gunthak2240382, range=158 (-718,-47,19)