The files below provide individual observer data for each condition. The files are tab-delimited tables, each 108 rows x 3 columns. The first column is the trial-by-trial luminance of the tab in cd/m^2, in the order that they were presented in the experiment. The second column indexes the tab orientation: 1 = flat in-plane, upper light contex (-90 degrees); 2 = rotated out-plane, lower dark context (45 degrees); 3 = rotated out-plane, upper light context (-45 degrees); 4 = flat in-plane, lower dark context (90 degrees). Note that this is not the natural order that you might expect. The third column contains the observer's responses from the grayscale Munsell chart. The Munsell values range from 0.5 to 9.5. As noted in the manuscript, there are three out-of-range values: -1 = "Darker than 0.5"; -2 = "Lighter than 9.5, but still a surface"; -3 = "Glowing".
Munsell values for our experiment may be converted to reflectances via this table. First column is Munsell value, second is reflectance, third is log10 reflectance.
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