NPCs composing that spawngroup :

a_sepulcher_skeleton (33%)

a_sepulcher_skeleton (33%)

greater_war_boned_skeleton (34%)

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

charasis_5, range=170 (217,-351,22)

hexbone_skeleton (100%)

charasis_7, range=187 (117,-458,40)

an_undertaker_skeleton (50%)
a_hamal_skeleton (50%)

charasis_8, range=184 (152,-440,25)

charasis_9, range=166 (146,-422,24)

charasis_10, range=154 (152,-404,24)

charasis_11, range=195 (-99,-388,5)

a_helot_spectre (100%)

charasis_12, range=52 (12,-294,22)

elementalbone_skeleton (50%)
hexbone_skeleton (50%)

charasis_14, range=166 (101,-440,22)

charasis_15, range=131 (101,-404,23)

charasis_19, range=196 (-43,-444,22)

charasis_20, range=131 (28,-405,22)

charasis_21, range=137 (7,-404,22)

charasis_22, range=57 (6,-276,23)

charasis_23, range=16 (79,-276,22)

charasis_24, range=78 (139,-299,21)

charasis_25, range=97 (85,-183,22)

charasis_26, range=65 (86,-217,23)

charasis_27, range=140 (12,-147,22)

a_pyre_golem (50%)
a_pyre_golem (50%)

charasis_29, range=150 (-12,-147,22)

charasis_30, range=179 (-1,-111,21)

a_pulsating_bile (50%)
hexbone_skeleton (50%)

charasis_31, range=108 (52,-170,23)

charasis_32, range=54 (52,-225,22)

charasis_33, range=115 (-28,-207,22)

charasis_92, range=164 (-82,-355,4)

charasis_112, range=83 (-1,-224,-194)

a_sepulcher_skeleton (100%)

charasis_174, range=17 (45,-279,-194)

greater_war_boned_skeleton (100%)

charasis_175, range=100 (25,-185,-194)

charasis_176, range=128 (-25,-185,-194)

charasis_177, range=61 (31,-225,-194)

a_sepulcher_skeleton (100%)

charasis_197, range=178 (-83,-381,4)

charasis_199, range=195 (-116,-357,5)

charasis_203, range=171 (-28,-424,21)

a_pulsating_bile (100%)

charasis_204, range=85 (14,-348,22)

hexbone_skeleton (100%)

charasis_209, range=76 (116,-224,23)

a_helot_spectre (100%)