Tracer Interpretation Using Temporal Moments on a Spreadsheet G

Figure 5. The ExponDecay plot after running ExponentialDecay. The data point (at t=181 days) was
moved through the data by clicking the down arrow. When the plot appeared linear, the macro was
invoked by clicking on the macro button. The curve fit parameters t b , a, and b are copied automatically to
the MoM sheet.
Figure 6. A portion of the MoM sheet after running UpdateMoM. Num 1/2 and denom 1/2 are the
portions of the moment analysis estimated from the integrals; num 2/2 and denom 2/2 are the extrapolated
portion; t-apparent is the apparent first moment ignoring the extrapolation, showing the amount of
potential error by ignoring the tail (8% in this case).
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