The dialog box for s1.
Note the Associate with Data Name is Cp. Also note, the equation s1 = q1/V. That is, sample 1 (s1) is q1/V.
The dialog box for s2.
Note the Associate with Data Name is U.
The information in the Data Window looks like:
DATA (FSD 0.1) t Cp 0.80 19.90 1.00 16.82 1.50 16.77 2.00 15.09 2.50 15.51 3.00 13.08 4.00 12.58 5.00 11.39 6.00 9.95 9.00 7.14 12.00 5.86 END DATA (SD 2.5) t U 1.00 9.3 2.00 18.3 4.00 35.8 6.00 58.8 9.00 66.9 12.00 81.3 24.00 102.3 36.00 126.8 48.00 127.7 ENDNotice that the table headings are t Cp and t U matching the Data Names defined above for Cp and U. Also notice that different weighting schemes or value are possible.