NPCs composing that spawngroup :

#A_Swirling_Elemental_Force (3%)

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

poair2150100, range=75 (-570,-1573,356)

poair2150359, range=77 (-693,-1660,334)

poair2150476, range=72 (-635,-1535,343)