Bodyguard duration formula

[Daon]

I found out the formula of parrying mastery Bodyguard duration
Skill is real skill.
If weapon skill + parrying skill x 2
value < 300 : 60s
300 =< value < 330 : 70s
330 =< value < 360 : 80s
value = 360 : 90s (Weapon skill 120 parrying skill 120)
Mastery level does not affect to duration.

 

[Merus]

I found out the formula of parrying mastery Bodyguard duration
Skill is real skill.
If weapon skill + parrying skill x 2
value < 300 : 60s
300 =< value < 330 : 70s
330 =< value < 360 : 80s
value = 360 : 90s (Weapon skill 120 parrying skill 120)
Mastery level does not affect to duration.

All effects double if you use Kevin Costner as your bodyguard.