Statistics can be downloaded from the Illustration editor by navigating to the Statistics section at the bottom of the page. Clicking on the CSV icon will download a file containing statistics pertaining to the data that you have used to create your illustration.
Clicking into the Displaying selections to the left of the CSV icon allows you to access a dropdown menu where you can update the statistics table parameters by changing the equation, statistic type, or channel values used to create the illustration. Making changes in the dropdown menus of the Displaying selections can also change the displayed illustration. For instance, if you change the equation from raw to transformed ratio on a heatmap illustration the figure will be updated accordingly. Read more about configuring heatmaps in this article
The corresponding downloaded csv file can be opened in excel or prism for statistical analysis.