Crit% from skills

[Firestrider]

How much crit % does 1 skill point in say Two Handed Axes do you get? At level 30 I've seen it increase by 0.04% per point. Is it different for any other skills? Is this independant from any other modifiers or level?

[Tunga]

0.04% per point constant fixed rate no matter what your current level / points are.

Remember the value you see in your spell book is against your own level.