Hi Senia,
Right-click on the related legend item, then select "Copy curve data to clipboard":
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Pasting here (first line is x-axis and second line is y-axis):
... 12 13 14 15 16 17 18 ...
... 234.833 263.742 250.608 281.034 267.032 271.951 262.003 ...
To make sure to copy all acquired data, you should enable "Keep all data":
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cheers