The text files contain one row for each matching trial.  There are four columns, with headers.  

Column 1 - Test card identifier (1-10).
Column 2 - CHamber in which card was placed, 1 -> left, 2 -> right.
Column 3 - Test slant in degrees.
Column 4 - Matched palette patch (1 to 10 in steps of 0.5)

NaN indicates an out of range response (low or high).