You solve it, either yourself or Bob. Give the answer with the method and calculations.
Here is a white paper that Bob85 used to get his answer, that was already posted in post 9 of this thread...
I also came up with an answer, and used a different method to get it. Perhaps you should read the posts beyond the first post once again. After all, I see no reason to post what has already been posted in this thread for someone who is acting a lot like a troll.