Hello, I have tried to use the relax standard script to do curve-fitting for T1. However I just got one set of relaxation data(/i.e./ 5ms X 1, 120ms X 1, 240ms X1 ......), is it possible to use the script to fit the data? Could anybody give me some suggestion how to do it? Thanks! -- ==================== Xia,Wei Department of Chemistry The University of Hong Kong Pokfulam Road, Hong Kong P.R.China