I have recently become aware that certain artifacts of time intensity data make them unable to be analyzed using XLSTAT. These artifacts are notable and are perhaps what differentiates certain products from one another. I think it would be beneficial to alter the algorithm to still calculate TI parameters even if imperfect bell curves exist. Afterall, I feel that TI is really only useful if you are differentiating data sets. If all of the curves looked bell shaped I would think there would not need to be too much analysis done.