NPCs composing that spawngroup :

a_siren_beguiler (25%)

a_siren_beguiler (25%)

a_siren_myrmidon (25%)

a_siren_templar (25%)

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

sirens_35, range=91 (33,-81,-135)

sirens_36, range=99 (34,-26,-135)

sirens_44, range=35 (-63,-100,3)

sirens_70, range=13 (-54,-78,-133)

sirens_72, range=35 (-51,-30,-133)

sirens_74, range=32 (-27,-54,-157)

a_neriad_mistress (100%)

sirens_127, range=78 (-49,-143,-117)

sirens_130, range=98 (-43,32,-117)

a_siren_myrmidon (50%)
a_siren_templar (50%)

sirens_131, range=72 (-54,7,-110)

a_siren_beguiler (50%)
a_siren_templar (50%)

sirens_132, range=49 (-64,-16,-104)

sirens_134, range=21 (-63,-44,-100)

sirens_135, range=25 (-63,-90,-104)

sirens_136, range=56 (-58,-121,-110)

sirens_112963, range=86 (29,-54,-135)

#Faleniel_of_Darkwater (100%)

sirens_231256, range=82 (-19,8,-13)

a_servant_swordfish (100%)

sirens_231274, range=36 (-50,-29,-133)

a_watery_servant (100%)

sirens_231277, range=99 (34,-25,-135)

sirens_231279, range=12 (-53,-77,-133)

#shimmering_sea_spirit (10%)
an_icy_servant (90%)