NPCs composing that spawngroup :

An_Enthralled_Underbulk (100%)

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

thedeep1312284, range=101 (-644,-309,-92)

a_shrieker (50%)
a_shrieker (50%)
a_shrieker (50%)
a_shrieker (50%)
a_shrieker (50%)
a_shrieker (50%)
a_shrieker (50%)
a_shrieker (50%)

thedeep1312283, range=182 (-751,-420,-94)

a_shrieker (50%)
a_shrieker (50%)

thedeep1312263, range=148 (-738,-387,-94)

An_Enthralled_Underbulk (100%)

thedeep1312262, range=45 (-758,-216,-87)

an_enthralled_outcast (100%)

thedeep1312261, range=53 (-749,-196,-90)

An_Enthralled_Underbulk (50%)
An_Enthralled_Underbulk (50%)

thedeep1312260, range=78 (-743,-165,-92)

An_Enthralled_Razorfiend (100%)

thedeep1312259, range=101 (-696,-339,-86)

An_Enthralled_Razorfiend (100%)

thedeep1312246, range=188 (-732,-428,-91)

a_shrieker (34%)
a_shrieker (33%)
a_shrieker (33%)
a_shrieker (34%)
a_shrieker (33%)
a_shrieker (33%)
a_shrieker (34%)
a_shrieker (33%)
a_shrieker (33%)
a_shrieker (34%)
a_shrieker (33%)
a_shrieker (33%)

thedeep1312181, range=120 (-632,-324,-93)

thedeep1312180, range=92 (-642,-292,-94)

a_shrieker (50%)
a_shrieker (50%)

thedeep1312178, range=99 (-712,-141,-94)

a_shrieker (100%)

thedeep1312170, range=42 (-724,-198,-89)

an_enthralled_outcast (50%)
an_enthralled_outcast (50%)

thedeep1312159, range=111 (-677,-137,-94)

a_shrieker (50%)
a_shrieker (50%)

thedeep1312017, range=107 (-627,-296,-94)