Supplement to: Hofstede, Coen Matthijs; Christoffersen, Poul; Hubbard, Bryn; Doyle, Samuel H; Young, Tun Jan; Diez, Anja; Eisen, Olaf; Hubbard, Alun L (2018): Physical Conditions of Fast Glacier Flow: 2. Variable Extent of Anisotropic Ice and Soft Basal Sediment From Seismic Reflection Data Acquired on Store Glacier, West Greenland. Journal of Geophysical Research-Earth Surface, 123(2), 349-362, https://doi.org/10.1002/2017JF004297