NPCs composing that spawngroup :

Burynai_excavator (33%)

Burynai_Excavator (34%)

greater_skeleton (33%)

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

kurn_9, range=63 (0,13,3)

scalebone_skeleton (100%)

kurn_18, range=22 (-70,30,-39)

Burynai_excavator (100%)

kurn_44, range=57 (-9,29,-116)

kurn_68, range=88 (22,-17,-118)

kurn_71, range=86 (-41,-75,-107)

kurn_72, range=59 (-83,-48,-107)

Burynai_excavator (100%)

kurn_90, range=82 (-75,-73,-30)

kurn_91, range=33 (-30,8,-39)

kurn_92, range=99 (11,-57,-39)

kurn_111, range=86 (-146,-18,-23)

Burynai_Excavator (100%)

kurn_113, range=58 (-114,-19,-22)

Burynai_burrower (50%)
Burynai_excavator (50%)

kurn_117, range=98 (-31,-85,-30)

Burynai_Excavator (50%)
Burynai_Excavator (50%)

kurn_132, range=82 (-8,70,-39)

Burynai_excavator (50%)
Burynai_sapper (50%)

kurn_133, range=69 (-51,77,-39)

kurn_134, range=56 (-84,61,-39)

Burynai_Excavator (50%)
Burynai_Excavator (50%)

kurn_135, range=75 (-138,19,-39)

kurn_136, range=65 (-84,-53,-30)

kurn_150, range=79 (-111,72,-39)

Burynai_excavator (100%)

kurn_151, range=43 (-106,18,-39)

kurn_152, range=32 (-88,-11,-30)

kurn_153, range=19 (-62,-10,-30)

kurn_160, range=12 (-53,1,9)

greater_skeleton (100%)

kurn_166, range=32 (-50,39,104)

kurn_183, range=73 (-62,-65,129)

greater_skeleton (100%)
greater_skeleton (100%)

kurn_184, range=57 (-85,61,106)

greater_skeleton (50%)
scalebone_skeleton (50%)

kurn_185, range=31 (-39,-12,104)

kurn_186, range=39 (-58,-30,104)

kurn_187, range=79 (13,-13,104)

kurn_188, range=53 (-13,29,104)

greater_skeleton (50%)
scalebone_skeleton (50%)

kurn_192, range=66 (0,31,-39)

fingered_skeleton (20%)
thick_boned_skeleton (80%)

kurn_193, range=36 (-35,31,-39)

thick_boned_skeleton (100%)

#Crackling_Bones_189490, range=77 (-31,80,-39)

#Crackling_Bones (25%)
lesser_charbone_skeleton (75%)