The polar heatmap illustrates directed diffusions and barriers by using color gradients referring to the number of present molecules in specific angles. On the top you have a visual representation of the Airyscan detector that indicates the fibers that are used for the correlations. These heatmaps are calculated from six pair correlation curves and the pair correlation function (pCF). The pair correlation function is a set of cross-correlations between the central fiber and all fibers located at a given distance from the center. The rainbow pattern is used to map the diagram color to the corresponding correlation amplitude. The color mapping and legend are the same for both heatmaps and the color palette can be selected in the Diffusion Tools tab. A right click on the heatmap displays a menu that allows you to save it as an image on your PC. The displayed degrees can vary based on your system configuration.