NPCs composing that spawngroup :

an_icy_goblin (25%)

a_goblin_evoker (25%)

a_goblin_priest (25%)

a_goblin_wizard (25%)

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

permafrost_10, range=93 (125,-318,3)

permafrost_23, range=75 (48,-345,3)

an_ice_goblin (50%)
a_goblin_priest (50%)

permafrost_24, range=45 (50,-315,3)

an_ice_goblin (50%)
a_goblin_evoker (50%)

permafrost_25, range=63 (47,-333,3)

an_ice_goblin (50%)
a_goblin_priest (50%)

permafrost_29, range=18 (49,-288,3)

an_ice_goblin (50%)
a_goblin_prelate (50%)

permafrost_30, range=14 (48,-256,3)

an_ice_goblin (50%)
a_goblin_diviner (50%)

permafrost_82, range=55 (46,-215,3)

an_ice_goblin (50%)
an_ice_goblin (50%)

permafrost_83, range=68 (40,-202,3)

an_ice_goblin (50%)
a_goblin_priest (50%)

permafrost_84, range=82 (49,-188,3)

an_ice_goblin (50%)
an_ice_goblin (50%)

permafrost_103, range=87 (120,-315,3)

an_ice_goblin (50%)
a_goblin_priest (50%)

permafrost_130, range=93 (138,-257,3)

an_ice_goblin (50%)
a_goblin_evoker (50%)