How to Read Experimental Armor Stats

I'm a little lost when it comes to the new armor stats found on experimental builds.

Here's what I'm assuming what each stat means, please correct me if I'm wrong:

Total Coverage: Chance of the armor protecting the body part when it's hit.
Defaults/Vitals: Chance of the armor protecting a hit to a normal part/any part that makes you bleed or cause critical?
Protection: Chance of each part of a non-uniform armor being hit. For example, when armor blocks a hit to the lower arm it has a 10% of only using the lower value for damage reduction.