Converting two-series ASCII file to two-column spreadsheet document

1. Open NoteTabLight, File > Open; select the filename, then click Open button:
   
2. Select the real FID data:
   
3. Include a tabulation character between the intensity position and the intensity. Modify > Spaces > Single Tab:
   
4. Select the imaginary FID data. Include a tabulation character between the intensity position and the intensity. Modify > Spaces > Single Tab:
   
   Save the file.
5. Open the file with MS spreadsheet Excel by right-button click on the file icon: