NPCs composing that spawngroup :

an_undertaker_skeleton (25%)

a_hamal_skeleton (25%)

a_helot_spirit (50%)

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

charasis_8, range=39 (152,-440,25)

charasis_15, range=56 (101,-404,23)

charasis_89, range=82 (152,-533,22)

elementalbone_skeleton (50%)
hexbone_skeleton (50%)

charasis_90, range=76 (136,-532,22)

charasis_194, range=82 (80,-532,22)

charasis_195, range=92 (63,-533,22)