NPCs composing that spawngroup :

Burynai_sapper (100%)

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

kurn_1, range=79 (87,-231,122)

greater_skeleton (100%)

kurn_5, range=94 (103,-223,-102)

greater_scalebone (100%)

kurn_7, range=58 (45,-357,-22)

kurn_8, range=81 (108,-244,4)

kurn_10, range=89 (87,-218,-102)

kurn_12, range=14 (50,-285,-97)

kurn_17, range=41 (60,-259,-99)

Burynai_excavator (50%)
lesser_charbone_skeleton (50%)

kurn_35, range=39 (80,-278,-99)

kurn_82, range=91 (-41,-276,-23)

kurn_85, range=97 (-33,-353,-23)

kurn_87, range=91 (71,-211,-24)

Burynai_burrower (50%)
Burynai_Excavator (50%)

kurn_161, range=91 (0,-221,90)

greater_scalebone (90%)
undead_crusader (10%)

kurn_163, range=99 (-10,-218,132)

kurn_165, range=81 (34,-219,132)

kurn_166, range=48 (32,-253,132)

kurn_169, range=56 (0,-270,132)

kurn_176, range=51 (63,-250,124)

kurn_177, range=98 (14,-391,-21)