Know the Low / High % for Health / Focus?

Hi,

In The Breach Patch Notes we see that “The player is now considered to be at Low Health when below 50%”. Is it the same for Focus?

In Magical Enchantments we have some description about Health / Focus with Low / High / Full.
If Low = 0% to 49%, the High = 50% to 99%, may be…

Does anyone have an official source regarding % for Low / High for Health / Focus?

Thanks by advance