We thank the whole EvoVis group (Gustav Bohlin, Ute Harms, Gunnar Höst, Nalle Jonsson, Marta Koc-Januchta, Konrad Schönborn, and Jörgen Stenlund) for valuable support during work on the article. Special thanks are due to Gunnar Höst for valuable discussions on statistics and John Blackwell for language review. We also thank the Swedish Research Council for providing the funds for the research presented in the paper. This work was supported by the Swedish Research Council (VR 2012:5344, LT).