Worked on enhancing data representation and readability in the Results Table for the mozilla/perfcompare repository, focusing on front end improvements using React, JavaScript, and TypeScript. Delivered a new Median Difference column and renamed the Effect Size column to a more concise label, optimizing space and clarity for users analyzing performance data. Updated associated tests to ensure accurate calculations and alignment with the revised UI, while resolving merge conflicts and integrating changes smoothly into the main branch. Maintained thorough documentation and code comments to clarify new data semantics, supporting analysts in interpreting results and maintaining consistency across the project’s evolving interface.