brightness:auto - details?

[Schmetterfliege]

Hi @Foddy,

I'm currently (and slowly) starting to play with huemagic again, starting with the hue groups.
The examples that were created are absolutely awesome! Love them!

The brigthness:auto setting is described as changing the brightness according to the current time.
Can you share some details about how that works?
Are there fixed values for e.g. each hour (e.g. idk 25% at 16:00, ...)?
Is there a way to configure the time:value properties?

So far I only have one light where I would use that (bathroom), but I'd like to understand when which brigthness is used :)

Edit: same goes for color temperature :)