What's the highest and lowest note Ayu has sung?

[ExodusUK]

Any experts around here? Some youtube examples would be great. I'm guessing she does her lowest in Because of You live?

[Heavenly]

I read somwhere that her highest note was in kanariya (maybe that's why she never sung it live).
But about the lowest, i don't know.

[zaqwanbadli]

For me it's INSPIRE that has low notes in the verses.

[Nadya]

I'm almost sure the lowest notes are in Last angel verses! She even does not try to sing them live, most probably because of this...
As for live performances... maybe You were... I believe it has lower notes in verses than Because of you.

[warawiri]

and how length is her range and octav...??