What Are Average Spell Dam For Pure?

Please tell me avg spell dam for pure {mythic wand}

 

According to my mathematical calculations that are highly untrustworthy because I'm absolutely shit at maths, the average spell damage for a Pure is 330-490% Spell DMG, 300% Pure being most common, 500% Pure being most rare

 

http://wynnapps.tk/item/pure

There is no need for speculations, base of Pure spell dmg is 400% and average is 400%x0.8 = 320%

 

pfft i knew that

 

is*

 

****520%

 

Or you could do 520-120=400/2=200 then you either add 200 to lowest or subtract 200 from highest.