NPCs composing that spawngroup :

#Zorglim_the_Dead (50%)

a_ghostly_student (50%)

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

frozenshadow_13, range=33 (544,866,23)

a_ghostly_student (50%)
a_ghostly_student (50%)

frozenshadow_22, range=98 (490,770,23)

a_ghostly_student (50%)
a_ghostly_student (50%)

frozenshadow_23, range=96 (583,802,23)

a_ghostly_scholar (100%)

frozenshadow_25, range=36 (483,842,23)

a_ghostly_student (50%)
a_ghostly_student (50%)

frozenshadow_32, range=52 (563,857,26)

frozenshadow_41, range=59 (452,858,23)

a_ghostly_student (50%)
a_ghostly_student (50%)