When saving TAC to file or Clipboard, and appropriate Header is placed before the 2-column data. In the following format    "Dynamic Component (Dynamic Units)  - TAB - value"  so it is suitable for an easy incorporation to Excel.

Enabled saving the "Fitted Curve" from the RoiStats4D dialog.  When user chooses "Save (to file)" or "Copy (to clipboard),  Dialog choice appears that allows to select either "Active ROI" or "Fitted" curve.