Hi, all, I'm new to relax. I want to use it for modelfree analysis recently and I only have a set of relaxation data from 500MHz NMR spectrometer. May I ask if I can run modelfree analysis using relaxation data from only single magnetic field? All the sample scripts in relax's manual requires data at least from 2 fields. I haven't find a way to do that. I heard ModelFree4 can do it. But that software is kind of old, and I have to separately calculate r1 r2 noe. That's why I still want to try relax first. If anyone can teach me, I really appreciate! Best regards, Danyun Postdoctoral fellow Department of Biochemistry & Biophysics Texas A&M University