The following data is published in: "The phase of water ice which forms in cold clouds in the mesospheres of Mars, Venus and Earth" All enquiries to Thomas P Mangan (t.p.mangan@leeds.ac.uk) Datasets are provided in excel format within a single file for all original experimental data from Figure 3-6 Comprising X-ray Diffraction patterns of water ice between 88-145 K. Shown in 2theta (degrees) against arbitrary signal.