NPCs composing that spawngroup :

Burynai_excavator (33%)

Burynai_Excavator (34%)

lesser_charbone_skeleton (33%)

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

kurn_9, range=89 (-228,15,-23)

scalebone_skeleton (100%)

kurn_11, range=59 (-172,-30,4)

greater_scalebone (50%)
greater_skeleton (50%)

kurn_18, range=69 (-70,30,-39)

Burynai_excavator (100%)

kurn_72, range=86 (-83,-48,-107)

Burynai_excavator (100%)

kurn_111, range=37 (-146,-18,-23)

Burynai_Excavator (100%)

kurn_113, range=44 (-114,-19,-22)

Burynai_burrower (50%)
Burynai_excavator (50%)

kurn_125, range=51 (-186,0,-23)

kurn_134, range=68 (-84,61,-39)

Burynai_Excavator (50%)
Burynai_Excavator (50%)

kurn_136, range=90 (-84,-53,-30)

kurn_149, range=75 (-63,9,-30)

kurn_150, range=60 (-111,72,-39)

Burynai_excavator (100%)

kurn_151, range=32 (-106,18,-39)

kurn_152, range=58 (-88,-11,-30)

kurn_153, range=81 (-62,-10,-30)

kurn_154, range=57 (-164,-32,-23)

Burynai_Excavator (50%)
Burynai_excavator (50%)

kurn_158, range=99 (-184,-69,-23)

kurn_160, range=87 (-53,1,9)

greater_skeleton (100%)
greater_skeleton (100%)

kurn_166, range=90 (-50,39,104)

kurn_179, range=34 (-170,31,4)

kurn_183, range=76 (-126,-57,48)

greater_skeleton (100%)

kurn_184, range=68 (-85,61,106)

greater_skeleton (50%)
scalebone_skeleton (50%)

kurn_186, range=93 (-58,-30,104)