NPCs composing that spawngroup :

an_elemental_harvester (50%)

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

hole_32, range=31 (92,217,-332)

an_elemental_capturer (50%)

hole_35, range=47 (50,268,-383)

#a_ratman_guard (50%)

hole_38, range=48 (121,209,-333)

hole_61, range=86 (180,256,-333)

a_wanderer (50%)
a_wanderer (50%)

hole_62, range=64 (149,215,-347)

hole_71, range=68 (119,185,-333)

a_wanderer (50%)
a_wanderer (50%)
a_wanderer (50%)

hole_72, range=51 (116,202,-347)

a_wanderer (50%)
a_wanderer (50%)

hole_96, range=77 (144,190,-333)

hole_101, range=53 (47,275,-346)

hole_102, range=10 (94,239,-346)

hole_103, range=23 (71,251,-346)

hole_175, range=92 (111,340,-347)

a_wanderer (50%)
a_wanderer (50%)

an_elemental_capture_189544, range=13 (81,252,-343)

an_elemental_capture_189545, range=39 (85,287,-382)

an_elemental_wizard_189571, range=45 (115,209,-347)

an_elemental_wizard (50%)
bejeweled_elemental (50%)

an_elemental_harvest_189594, range=66 (97,183,-333)

an_elemental_harvester (50%)

an_elemental_harvest_189595, range=97 (181,205,-347)

an_elemental_harvester (50%)

a_rock_golem_189606, range=81 (20,282,-382)

a_rock_golem (50%)

a_rock_golem_189615, range=37 (58,261,-340)

a_rock_golem (50%)

a_rock_golem_189624, range=45 (104,205,-347)

a_rock_golem (50%)

a_rock_golem_189626, range=35 (109,217,-333)

a_rock_golem (50%)

a_rock_golem_189627, range=74 (112,177,-333)

a_rock_golem (50%)

an_elemental_deceive_189654, range=51 (44,235,-346)

an_elemental_deceiver (50%)

an_elemental_visier_189666, range=75 (21,270,-382)

an_elemental_visier (50%)

an_elemental_channel_189675, range=50 (112,202,-333)

an_elemental_channeler (50%)