There is a strange feedback occurring. Magazines cover topics their readers are interested in while simultaneously affecting their readers' interests and preferences.
The magic numbers p and b1-b5 were obtained from approximation (2) in Bryc, W. "A uniform approximation to the right normal tail integral", Applied Mathematics and Computation, Volume 127, Issue 2-3 (April 2002), Pages 365-374.
I have added links to this reference in the post if you'd like to look at it.