Actual SMV of Men vs. Women:

https://rationalmale.files.wordpress.com/2012/05/smv_curve1.jpg

Distorted, Feminized View of SMV:

https://rationalmale.files.wordpress.com/2012/06/feminized_smv_curve.jpg


EDIT:

These graphs are from rationalmale

http://rationalmale.wordpress.com/2012/06/04/final-exam-navigating-the-smp/

http://rationalmale.wordpress.com/2012/06/12/smv-in-girl-world/

I don't think the graphs are meant to be exact science, but more of a rudimentary measuring for the reality that women's SMV is higher earlier but falls faster than men's SMV, which peaks later. Read the two articles for more detail.