NPCs composing that spawngroup :

a_dread_bone (33%)

a_greater_skeleton (33%)

a_greater_skeleton (34%)

NPCs spawning around that spawngroup :
(Max range : 100)

befallen_85, range=58 (-483,71,-78)

a_greater_skeleton (50%)
ice_boned_skeleton (50%)

befallen_89, range=84 (-456,80,-39)

befallen_106, range=54 (-486,86,-77)

befallen_110, range=47 (-494,95,-76)

befallen_113, range=99 (-465,20,-39)

befallen_115, range=98 (-449,47,-38)

befallen_117, range=51 (-591,88,-39)

befallen_118, range=80 (-568,161,-39)

befallen_120, range=49 (-519,130,-39)

befallen_121, range=73 (-511,152,-39)

befallen_123, range=66 (-571,26,-39)

befallen_124, range=68 (-556,18,-38)