NPCs composing that spawngroup :

a_siren_enchantress (33%)

a_siren_enticer (33%)

a_siren_priestess (34%)

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

sirens_4, range=52 (-713,-646,-155)

sirens_6, range=95 (-566,-647,-152)

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

sirens_48, range=55 (-640,-695,-152)

sirens_60, range=55 (-713,-662,-47)

sirens_85, range=81 (-728,-597,-78)

sirens_97, range=59 (-691,-695,-46)

sirens_98, range=88 (-668,-732,-58)

sirens_99, range=94 (-581,-695,-46)

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

sirens_102, range=61 (-639,-701,-58)

sirens_103, range=21 (-663,-665,-60)

a_siren_enchantress (50%)
a_siren_enticer (50%)

sirens_104, range=51 (-614,-665,-60)

sirens_106, range=45 (-616,-643,-62)

sirens_142, range=24 (-682,-656,-68)

sirens_145, range=96 (-638,-738,-25)

#Mistress_Latazura (100%)

sirens_231229, range=53 (-712,-661,-47)

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

a_coldspine_seahorse (99%)
Fellspine (1%)

sirens_231274, range=46 (-615,-642,-62)

a_watery_servant (100%)
a_watery_servant (100%)

sirens_231275, range=1 (-660,-643,-61)

an_icy_servant (100%)
an_icy_servant (100%)

sirens_231277, range=26 (-644,-664,-60)

sirens#Mistress_Latazura0002124999, range=96 (-638,-738,-27)

#Mistress_Latazura (100%)

sirens_231286, range=51 (-614,-665,-60)