Parallel mode differential phase contrast in transmission electron microscopy, II: K2CuF4 Phase Transition G. W. Paterson 1*, G. M. Macauley 1,2, S. McVitie 1, Y. Togawa 3 1. SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, UK. 2. Current addresses: Laboratory for Mesoscopic Systems, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland; Laboratory for Multiscale Materials Experiments, Paul Scherrer Institute, 5232 Villigen, Switzerland. 3. Department of Physics and Electronics, Osaka Prefecture University, 1-1 Gakuencho, Sakai, Osaka, 599-8531, Japan. * Dr.Gary.Paterson@gmail.com Microscopy and Microanalysis: https://www.cambridge.org/core/journals/microscopy-and-microanalysis Preprint: https://arxiv.org/abs/2107.06280 Enlighten deposit: http://eprints.gla.ac.uk/246994 Opendata deposit: https://doi.org/10.5525/gla.researchdata.1176 Deposit Description ------------------- This archive contains source data for the above paper. The data is organised in folders, named after the figure number. The contents are of the following type: *.csv Comma separated values with a header; typically used for 1-D data (e.g. line plots). *.npz Compressed NumPy arrays with each array named after the panel in the figure (e.g. a, b, ...) or by the data name. The exception to these categories is the Byx data for Figure 3, which contains the 2-D data for all temperatures, not just those shown in the figure. This data was also used to make the supplemental video. The csv files may be opened in any text reader, while the NumPy files can be opened with Python using the NumPy package. In some cases, the NumPy arrays have been converted to 16-bit floats to reduce space. Details of the experiments, analysis methods, and data processing are described in the manuscript.