Column 1: trial number
Column 2: internal timing of trial
Column 3: coding for position of start and end location (1 is rightmost combination; 3 is leftmost combination)
Column 4: x position on touchscreen for start location
Column 5: y position on touchscreen for start location
Column 6: x position on touchscreen for end location
Column 7: y position on touchscreen for end location


x direction is along the participant’s mediolateral axis
y direction is along the participant’s anteroposterior axis