Results obtained with a numerical code of mantle convection with temperature-dependent viscosity (StagYY by Paul J. Tackley, ETH Zürich) to model convection in Sputnik Planitia (Pluto). Convection is driven by surface cooling owing to sublimation at the surface. All the data needed to produce the figures in the paper and supplements are provided, along with the python script used to create them. The script will need some modifications to be able to run without accessing the raw data (too big for any repository) since these are used for snapshot informations. The script is therefore provided as a record of post-treatment techniques. Figures can nevertheless be reproduced from the provided data using standard python packages. Contact the authors for help if needed.