NPCs composing that spawngroup :

Burynai_excavator (100%)

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

kurn_9, range=71 (0,13,3)

scalebone_skeleton (100%)

kurn_44, range=61 (-9,29,-116)

kurn_72, range=78 (-83,-48,-107)

Burynai_excavator (100%)

kurn_91, range=45 (-30,8,-39)

kurn_111, range=89 (-146,-18,-23)

Burynai_Excavator (100%)

kurn_113, range=65 (-114,-19,-22)

Burynai_burrower (50%)
Burynai_excavator (50%)

kurn_132, range=74 (-8,70,-39)

Burynai_excavator (50%)
Burynai_sapper (50%)

kurn_133, range=50 (-51,77,-39)

kurn_134, range=33 (-84,61,-39)

Burynai_Excavator (50%)
Burynai_Excavator (50%)

kurn_135, range=68 (-138,19,-39)

kurn_136, range=84 (-84,-53,-30)

kurn_149, range=22 (-63,9,-30)

kurn_150, range=58 (-111,72,-39)

Burynai_excavator (100%)

kurn_151, range=37 (-106,18,-39)

kurn_152, range=44 (-88,-11,-30)

kurn_153, range=40 (-62,-10,-30)

kurn_160, range=33 (-53,1,9)

greater_skeleton (100%)

kurn_166, range=21 (-50,39,104)

kurn_183, range=94 (-62,-65,129)

greater_skeleton (100%)

kurn_184, range=35 (-85,61,106)

greater_skeleton (50%)
scalebone_skeleton (50%)

kurn_185, range=52 (-39,-12,104)

kurn_186, range=61 (-58,-30,104)

kurn_187, range=93 (13,-13,104)

kurn_188, range=57 (-13,29,104)

greater_skeleton (50%)
scalebone_skeleton (50%)

kurn_192, range=70 (0,31,-39)

fingered_skeleton (20%)
thick_boned_skeleton (80%)

kurn_193, range=35 (-35,31,-39)

thick_boned_skeleton (100%)

#Crackling_Bones_189490, range=63 (-31,80,-39)

#Crackling_Bones (25%)
lesser_charbone_skeleton (75%)