Dear All, � I have a very common question, which is already asked many times: the S02 value is larger than 1. I measure the Sr K-edge EXAFS of SrTiO3 with temperature dependence. The S02 value is larger than 1. I check the book of “XAFS for everyone”, in which say maybe because of the distorted data or wrong structure model. I check the data measured by other beamline with the same sample, the S02 value still is larger than 1. I change the background reduction parameters, same result. I also modify the model, still same result. � I am very confused with these results. I attached the data, FEFF paths, and the fitting python Code the package. Can anyone help me check my fitting procedure. � Best regards, Fan