NPCs composing that spawngroup :

a_newly_created_sentry (100%)

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

sleeper113015, range=2 (-686,-47,111)

sleeper113016, range=31 (-685,-15,111)

sleeper113017, range=62 (-685,16,111)

sleeper113052, range=97 (-687,-143,111)

sleeper113053, range=66 (-686,-112,111)

sleeper113054, range=34 (-686,-80,111)