SRS1 Cubic Spline for Excel is a plug-in for MS Excel whose aim is to add a new option to the toolbar: one which generates Cubic Spline-type graphic representations.
The Cubic Spline function that the SRS1 Cubic Spline for Excel plug-in generates is necessaary to generate the adjustments to the data curve graph, and also the interpolation. The resulting graph is shown in the same workbook, just at the side of the data used. It is compatible with MS Excel 97 or later.
The SRS1 Cubic Spline for Excel plug-in is completely free.