NPCs composing that spawngroup :

a_dangerous_mine_rat (33%)

a_goblin_death_caller (33%)

a_goblin_flashdrowser (34%)

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

nurga_12, range=82 (-1249,-1118,-173)

a_goblin_blood_knight (50%)
a_goblin_warder (50%)

nurga_116, range=77 (-1365,-1100,-173)

a_goblin_sneak (50%)
a_goblin_taskmaster (50%)

nurga_130, range=97 (-1229,-1199,-173)

a_goblin_sneak (100%)

nurga_193, range=60 (-1349,-1214,-173)

a_goblin_life_stealer (50%)
a_goblin_slave_driver (50%)

nurga_194, range=88 (-1343,-1247,-173)

a_goblin_blight_caster (50%)
a_goblin_spirit_mystic (50%)

va_nurga_508003, range=84 (-1341,-1244,-172)

va_nurga_508009, range=83 (-1249,-1116,-172)

va_nurga_508013, range=2 (-1321,-1162,-172)

va_nurga_508058, range=87 (-1258,-1225,-172)