Good morning professor, Would you please help me in this question. I have EXAFS data of an unknown new structure, the CIF file wasn't provided to me neither the samples of 3 different doping (the ones which the EXAFS data belong) . Is it possible to refine the coordination number of each scattering path without having any information about the standard value of S02 of this specific material measured in the same experimental condition , or even without having the exact CIF file of this alloy with 3 different doping ratios. Kind regards -- *Fai crescere le giovani ricercatrici e i giovani ricercatori*** *con il 5 per mille alla Sapienza* Scrivi il codice fiscale dell'Università  *80209930587 **Cinque per mille <https://urldefense.us/v3/__https://www.uniroma1.it/it/node/23149__;!!G_uCfsc... >*