During November 2024, Peter Donnel developed a diagnostic script for the gyselax/gyselalibxx repository to visualize plasma moment evolution from HDF5 distribution-function data. He designed and implemented Python-based workflows that compute and plot key plasma moments, including density, parallel velocity, and temperature components, for multiple species. The script enables both per-species and cross-species comparisons, exporting results as PNG files to support reproducible scientific analysis. Leveraging skills in data analysis, data visualization, and scientific computing, Peter’s work addressed the need for rapid, validation-friendly insight generation, laying a foundation for more efficient interpretation of experimental plasma data by researchers.