NPCs composing that spawngroup :

#Reanimated_Plaguebone (25%)

an_undertaker_skeleton (25%)

hexbone_skeleton (25%)

hexbone_skeleton (25%)

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

charasis_3, range=191 (265,-503,24)

a_mortiferous_golem (50%)
a_mortiferous_golem (50%)

charasis_4, range=175 (258,-483,23)

a_sepulcher_spectre (100%)

charasis_5, range=128 (217,-351,22)

hexbone_skeleton (100%)

charasis_7, range=56 (117,-458,40)

an_undertaker_skeleton (50%)
a_hamal_skeleton (50%)

charasis_8, range=62 (152,-440,25)

charasis_9, range=48 (146,-422,24)

charasis_10, range=51 (152,-404,24)

charasis_12, range=141 (12,-294,22)

elementalbone_skeleton (50%)
hexbone_skeleton (50%)

charasis_14, range=36 (101,-440,22)

charasis_16, range=157 (27,-543,23)

a_helot_spectre (100%)

charasis_17, range=137 (26,-520,23)

a_helot_spectre (50%)
hexbone_skeleton (50%)

charasis_19, range=149 (-43,-444,22)

charasis_20, range=73 (28,-405,22)

charasis_21, range=94 (7,-404,22)

charasis_22, range=159 (6,-276,23)

charasis_23, range=129 (79,-276,22)

charasis_24, range=111 (139,-299,21)

charasis_26, range=187 (86,-217,23)

charasis_32, range=185 (52,-225,22)

charasis_88, range=198 (135,-600,22)

charasis_89, range=138 (152,-533,22)

charasis_90, range=132 (136,-532,22)

charasis_92, range=189 (-82,-355,4)

charasis_173, range=132 (63,-278,-176)

charasis_174, range=137 (45,-279,-194)

greater_war_boned_skeleton (100%)

charasis_177, range=192 (31,-225,-194)

a_sepulcher_skeleton (100%)

charasis_192, range=199 (65,-600,22)

charasis_193, range=197 (80,-600,22)

charasis_194, range=129 (80,-532,22)

charasis_195, range=134 (63,-533,22)

charasis_196, range=160 (-45,-471,22)

charasis_197, range=185 (-83,-381,4)

charasis_203, range=130 (-28,-424,21)

a_pulsating_bile (100%)

charasis_204, range=103 (14,-348,22)

hexbone_skeleton (100%)

charasis_209, range=180 (116,-224,23)

a_helot_spectre (100%)