-Armor (stats for Front, Side etc.)
Most games show the front, side, and rear values which I think is inadequate. There will be many more engagements at an oblique angle of 30-60 degrees rather than a full 90 degree side shot. If you look at the difference between the armor value at 0 degrees and 45 degrees you'll see for yourself.
The WOT has a good app that will tell you the armor values in multiple locations using the vertical and horizontal angles.
link
Another option is to use the data cards from GMT's board game Panzer, they are free: link
I used the gun penetration data from the Panzer War site.
For armor values, I took the true armor value and fed it into the Relative Armor Calculator: link
For the oblique angle, I used 35 degrees to the frontal armor which is 55 degrees to the side armor. This way I get standardized values for 4 different target aspects.
When doing research, I found different publications use different methods of determining the armor thickness and no one gave the oblique angle values that I was satisfied with.
Cast armor gives 85-95% of the listed armor value, and many early war tanks had very brittle armor that gave less protection than listed. I factored that in too.
Good luck,
Wolfhag