Thank you for sharing the sample data. The method I am seeing is a bit tedious, but the task can be done. I can do the conversion of ECEF (X,Y,Z) to LLA (Latitude, Longitude, Altitude) using Latitude/Longitude/Height ECEF via J-Script . I can perform one row at a time. If I input the ECEF (X,Y,Z) in km, I get the result in Lat./Lon./Height. Add the resulting of Lat./Lon./Height in the Excel sheet, and use Add XY Data to add points from the XY Table. Note: Just use the values (e.g. 51.61909 / 8.75747 / 231.3) for Lat./Lon. and Height fields.
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