Solved
As you are asking for a solution in Mathcad (I assume that you mean Prime), you should show the data format in Mathcad, not a screenshot of a Excel spreadsheet.
And you sure should attach your worksheet with the data.
Its a difference if the data is provided as a matrix in Prime or in a Prime table. The latter would basically mean that the data is in three different columns.
If that's the case, a solution could be
If the data is in one whole matrix like in Terry's sheet (which I had used to avoid having to retype the data), a similar solution is possible using the column selector
Of course you could replace ORIGIN by the value used in your sheet (possibly 0) to make the expression look a bit less ugly
Its actually a 4-step procedure as well 😉
P9 worksheet attached
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