NPCs composing that spawngroup :

a_helot_spectre (25%)

a_sepulcher_skeleton (25%)

a_sepulcher_skeleton (25%)

a_sepulcher_skeleton (25%)

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

charasis_39, range=154 (-387,-250,4)

a_sepulcher_skeleton (50%)
a_sepulcher_skeleton (50%)

charasis_44, range=170 (-271,45,4)

an_undertaker_skeleton (50%)
a_sepulcher_skeleton (50%)

charasis_52, range=104 (-267,-127,22)

hexbone_skeleton (100%)

charasis_55, range=133 (-484,-32,3)

a_pulsating_bile (100%)

charasis_56, range=199 (-566,-117,4)

a_helot_skeleton (100%)

charasis_57, range=94 (-460,-117,4)

charasis_58, range=156 (-269,25,4)

a_sepulcher_skeleton (100%)
a_sepulcher_skeleton (100%)

charasis_59, range=102 (-274,-140,23)

charasis_60, range=118 (-250,-114,22)

charasis_61, range=190 (-182,-140,22)

charasis_62, range=146 (-223,-71,22)

charasis_93, range=41 (-367,-137,4)

charasis_94, range=22 (-389,-96,4)

charasis_96, range=105 (-351,8,14)

a_sepulcher_skeleton (100%)

charasis_97, range=107 (-408,4,14)

an_undertaker_skeleton (50%)
a_pulsating_bile (50%)

charasis_99, range=94 (-333,-8,15)

charasis_105, range=94 (-440,-156,5)

charasis_107, range=133 (-479,-168,5)

charasis_108, range=47 (-390,-138,4)

charasis_160, range=107 (-332,6,14)

charasis_169, range=186 (-553,-103,5)

charasis_178, range=127 (-244,-66,-127)

a_sepulcher_skeleton (100%)

charasis_179, range=107 (-387,10,-139)

a_bottomless_feaster (100%)

charasis_180, range=158 (-227,-21,-122)

charasis_181, range=132 (-257,-22,-122)

charasis_182, range=148 (-267,-206,-158)

charasis_183, range=185 (-239,-230,-158)

a_crypt_spectre_189513, range=103 (-439,-171,5)