What is the residuals plot in the Rotor-Gene ScreenClust HRM Software?

Once all melt curves are normalized, they are on a comparable basis. To make the information within each curve more useful for comparison, each curve is differentiated. The Residuals Plot is a plot of the difference between each sample and the composite median of all the samples after differentiation. The Residuals Plot of the Rotor-Gene ScreenClust HRM Software is different from a "Difference Plot" known from standard HRM software packages.