Dear list, I made an EXAFS analysis in Artemis (in Demeter 0.9.22) using all the available variables. This is a fragment of the .log file I got: Independent points : 17.7666016 Number of variables : 17 Chi-square : 265.0947132 Reduced chi-square : 345.8050781 R-factor : 0.0026486 Number of data sets : 1 : k-range = 2.942 - 11.043 : dk = 1 : k-window = hanning : k-weight = 1,2,3 : R-range = 1.115 - 3.5 : dR = 0.0 : R-window = hanning : fitting space = r : background function = yes : phase correction = no : background removal = E0: 20002.215, Rbkg: 1.0, range: [2.25:17.4039986832903], clamps: 0/24, kw: 2 : epsilon_k by k-weight = 3.189e-004 : epsilon_r by k-weight = 2.339e-001 : R-factor by k-weight = 1 -> 0.00220, 2 -> 0.00224, 3 -> 0.00392 The problem is that when I use the Nyquist criterion Nind=2*deltak*deltar/pi + 1 for calculating the number of independent points the value I got is much lower and close to 13. I was not aware of this discrepancy and it caused a reviewer to think I made up the fit! Am I doing something wrong? Is there another way to calculate the Nind that might have been used by Artemis? I would really appreciate any help. Yours Jesús