NPCs composing that spawngroup :

#A_Blazing_Rockhopper (16%)

#Rock_Garn_Timer (4%)

A_Rockhopper (40%)

a_Rockhopper (40%)

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

dawnshroud1392383, range=97 (972,-1958,61)

dawnshroud1392154, range=0 (899,-1894,63)

dawnshroud1392076, range=75 (894,-1969,61)

dawnshroud_54804, range=97 (972,-1958,61)

A_Rockhopper (50%)
a_Rockhopper (50%)

dawnshroud_54806, range=75 (894,-1969,61)