[Ifeffit] number of independent points

Hello, I am wondering what values Artemis/feffit use for kmax and kmin when calculating the number of independent points (Nidp) for a fit done in R-space, where according the feffit document, Nidp = { [2*(kmax - kmin)*(Rmax-Rmin) / pi] + 2}, and kmax and kmin define the fitting range. I have tried using the Fourier transform range for kmax and kmin, but this does not give agreement with the value of Nidp reported by Artermis. Thank you, George