NPCs composing that spawngroup :

an_ire_ghast (100%)

NPCs spawning around that spawngroup :
(Max range : 200)

spawn24341, range=199 (132,270,149)

spawn24340, range=191 (141,270,149)

spawn24330, range=50 (325,325,103)

spawn24287, range=149 (344,227,54)

spawn24286, range=134 (402,279,1)

spawn21498, range=100 (375,300,5)

spawn20348, range=160 (169,285,30)

spawn17088, range=55 (329,321,5)

spawn17086, range=191 (130,291,30)

spawn17085, range=142 (166,334,30)

spawn16738, range=118 (234,275,5)

spawn10012, range=118 (283,254,5)

spawn24347, range=193 (126,296,149)