NPCs composing that spawngroup :

an_ice_goblin (50%)

a_goblin_evoker (50%)

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

permafrost_9, range=23 (199,-588,3)

a_goblin_evoker (50%)
a_goblin_priest (50%)

permafrost_13, range=11 (187,-589,3)

a_goblin_priest (50%)
a_goblin_scryer (50%)

permafrost_68, range=44 (169,-545,3)

an_ice_goblin (50%)
a_goblin_priest (50%)

permafrost_69, range=163 (269,-455,3)

a_goblin_evoker (50%)
a_goblin_evoker (50%)

permafrost_70, range=141 (267,-481,3)

a_goblin_prelate (50%)
a_goblin_priest (50%)

permafrost_82, range=154 (205,-437,3)

an_ice_goblin (50%)
an_ice_goblin (50%)

permafrost_84, range=187 (243,-414,4)

an_ice_goblin (50%)
an_ice_goblin (50%)

permafrost_103, range=122 (228,-478,3)

an_ice_goblin (50%)
a_goblin_priest (50%)

permafrost_104, range=174 (169,-415,3)

an_ice_goblin (100%)

permafrost_111, range=50 (207,-549,3)

an_ice_goblin (50%)
a_goblin_priest (50%)

permafrost_134, range=123 (189,-466,3)

an_ice_goblin (50%)
an_ice_goblin (50%)

permafrost_135, range=89 (177,-500,3)

permafrost_136, range=93 (199,-498,3)

an_ice_goblin (50%)
a_goblin_prelate (50%)

permafrost_137, range=180 (141,-412,3)

an_ice_goblin (100%)