NPCs composing that spawngroup :

a_siren_enchantress (33%)

a_siren_enticer (34%)

a_siren_priestess (33%)

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

sirens_4, range=97 (-713,-646,-155)

sirens_6, range=50 (-566,-647,-152)

sirens_7, range=52 (-639,-596,-176)

sirens_48, range=57 (-640,-695,-152)

sirens_60, range=98 (-713,-662,-47)

sirens_82, range=72 (-550,-613,-72)

sirens_85, range=53 (-566,-662,-47)

a_siren_enchantress (50%)
a_siren_enticer (50%)

sirens_97, range=91 (-691,-695,-46)

sirens_99, range=62 (-581,-695,-46)

sirens_100, range=90 (-610,-733,-58)

sirens_101, range=26 (-594,-657,-68)

sirens_102, range=62 (-639,-701,-58)

sirens_103, range=51 (-663,-665,-60)

a_siren_enchantress (50%)
a_siren_enticer (50%)

sirens_104, range=22 (-614,-665,-60)

sirens_105, range=45 (-661,-644,-62)

sirens_142, range=67 (-682,-656,-68)

sirens_145, range=97 (-638,-738,-25)

#Mistress_Latazura (100%)

sirens_231229, range=97 (-712,-661,-47)

sirens_231269, range=54 (-639,-594,-164)

a_coldspine_seahorse (99%)
Fellspine (1%)

sirens_231274, range=1 (-615,-642,-62)

a_watery_servant (100%)
a_watery_servant (100%)

sirens_231275, range=44 (-660,-643,-61)

an_icy_servant (100%)
an_icy_servant (100%)

sirens_231277, range=35 (-644,-664,-60)

sirens#Mistress_Latazura0002124999, range=97 (-638,-738,-27)

#Mistress_Latazura (100%)

sirens_231286, range=22 (-614,-665,-60)