NPCs composing that spawngroup :

an_ember_magmin (90%)

a_fervid_magmin (10%)

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

solrotower2120020, range=180 (-1852,1927,290)

an_inferno_mephit (100%)

solrotower2120022, range=70 (-1693,2006,282)

a_molten_magmin (50%)
a_scorched_magmin (50%)

solrotower2120023, range=93 (-1601,2000,286)

a_whirl_of_embers (50%)
a_whirl_of_magma (50%)

solrotower2120035, range=192 (-1716,1752,289)

an_inferno_mephit (100%)

solrotower2120037, range=106 (-1718,1843,289)

a_fire_mephit (100%)

solrotower2120038, range=87 (-1640,1858,291)

a_whirl_of_cinders (100%)

solrotower2120041, range=48 (-1720,1936,294)

an_inferno_mephit (50%)
a_lava_mephit (50%)

solrotower2120045, range=142 (-1535,1978,289)

an_inferno_mephit (50%)
a_flame_mephit (50%)

solrotower2120047, range=39 (-1633,1941,289)

an_inferno_mephit (100%)

solrotower2120048, range=97 (-1631,2028,288)

a_molten_magmin (50%)
a_scorched_magmin (50%)

solrotower2120051, range=158 (-1801,1847,291)

solrotower2120052, range=170 (-1792,1818,291)

an_inferno_mephit (100%)

solrotower2120360, range=43 (-1669,1982,280)

a_flame_frog (100%)

solrotower2120391, range=181 (-1837,1860,288)

a_flame_mephit (100%)

solrotower2120392, range=131 (-1700,2067,291)

a_flame_mephit (100%)