This archive contains X-ray tomography projections and reconstructed slices of a sandstone sample. - proj.zip: All raw projections in TIFF format. - recon.zip: All reconstructed slices in TIFF format. - small.zip: Data (sinograms) for 4 selected slices, the corresponding reconstructed slices and a couple of raw projections, flat and dark fields. All meta-data is in the file BBii_.log. The first 30 projections are dark fields, the next 100 are flat fields taken before the projections, then 1501 projections over 0 to 180 degrees both included, and finally another 100 flat fields taken after the projections. The data is associated with the publication: S. Bruns, S. L. S. Stipp, H. O. Sørensen (2017) Looking for the Signal: A Guide to Iterative Noise and Artefact Removal in X-ray Tomography Reconstructions of Reservoir Rocks. Adv. Water Res. 105, 96-107. https://doi.org/10.1016/j.advwatres.2017.04.020