NPCs composing that spawngroup :

Burynai_excavator (100%)

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

kurn_1, range=92 (-53,144,4)

greater_skeleton (100%)

kurn_6, range=76 (-84,144,3)

kurn_18, range=58 (-70,30,-39)

Burynai_excavator (100%)

kurn_52, range=98 (-130,169,-121)

kurn_111, range=95 (-146,-18,-23)

Burynai_Excavator (100%)

kurn_113, range=91 (-114,-19,-22)

Burynai_burrower (50%)
Burynai_excavator (50%)

kurn_133, range=60 (-51,77,-39)

kurn_134, range=29 (-84,61,-39)

Burynai_Excavator (50%)
Burynai_Excavator (50%)

kurn_135, range=59 (-138,19,-39)

kurn_137, range=81 (-140,148,-39)

kurn_147, range=75 (-158,131,-39)

Burynai_excavator (100%)

kurn_148, range=74 (-122,146,-39)

kurn_149, range=79 (-63,9,-30)

kurn_151, range=54 (-106,18,-39)

kurn_152, range=86 (-88,-11,-30)

kurn_153, range=95 (-62,-10,-30)

kurn_155, range=77 (-171,121,-39)

kurn_160, range=91 (-53,1,9)

greater_skeleton (100%)

kurn_166, range=69 (-50,39,104)

kurn_179, range=71 (-170,31,4)

kurn_184, range=28 (-85,61,106)

greater_skeleton (50%)
scalebone_skeleton (50%)

kurn_193, range=86 (-35,31,-39)

thick_boned_skeleton (100%)

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

#Crackling_Bones (25%)
lesser_charbone_skeleton (75%)