NPCs composing that spawngroup :

Burynai_excavator (50%)

lesser_icebone_skeleton (50%)

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

kurn_9, range=67 (97,170,21)

scalebone_skeleton (100%)

kurn_11, range=62 (110,143,3)

greater_scalebone (50%)
greater_skeleton (50%)

kurn_13, range=16 (162,192,3)

kurn_15, range=88 (82,143,3)

kurn_22, range=25 (140,175,3)

kurn_59, range=53 (139,129,-116)

Burynai_excavator (50%)
Burynai_sapper (50%)

kurn_60, range=12 (152,177,-116)

Burynai_sapper (100%)

kurn_65, range=55 (166,121,-116)

kurn_95, range=67 (224,142,-39)

Burynai_excavator (100%)

kurn_104, range=53 (154,123,-39)

kurn_127, range=98 (106,256,-40)