NPCs composing that spawngroup :

an_ice_goblin (50%)

a_goblin_wizard (50%)

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

permafrost_1, range=83 (414,217,17)

an_ice_goblin (100%)

permafrost_20, range=82 (493,283,17)

a_goblin_evoker (50%)
a_goblin_priest (50%)

permafrost_34, range=84 (567,246,17)

permafrost_39, range=34 (462,198,-41)

a_dire_pup (50%)
a_young_dire_wolf (50%)

permafrost_42, range=71 (460,263,-41)

a_young_dire_wolf (100%)
a_young_dire_wolf (100%)

permafrost_55, range=75 (421,190,22)

a_goblin_archeologist (20%)
a_goblin_evoker (80%)

permafrost_61, range=93 (481,293,17)

an_ice_goblin (50%)
a_goblin_priest (50%)

permafrost_80, range=79 (550,260,17)

an_ice_goblin (50%)
a_goblin_prelate (50%)

permafrost_127, range=95 (402,183,16)

a_goblin_priest (100%)
a_goblin_priest (100%)