NPCs composing that spawngroup :

a_goblin_flame_douser (33%)

a_goblin_spirit_weaver (33%)

a_goblin_warder (34%)

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

nurga_86, range=18 (-1780,-1234,-173)

nurga_88, range=34 (-1791,-1250,-173)

a_goblin_life_drinker (50%)
a_goblin_miner (50%)

nurga_89, range=92 (-1871,-1251,-173)

a_goblin_back_biter (100%)

nurga_90, range=82 (-1867,-1213,-173)

a_goblin_blood_caster (50%)
a_goblin_blood_caster (50%)

nurga_200, range=25 (-1805,-1232,-173)

a_mine_rat (100%)

va_nurga_508003, range=4 (-1781,-1216,-172)

va_nurga_508013, range=37 (-1791,-1253,-172)