Algorithm 1

x ← −1 // Current position in gaze_list n ← 10 // Size of gaze_list REPEAT:  IF current gaze is on dashboard:   IF previous gaze is not on dashboard:    x ← x + 1    IF x ≥ n:     x ← 0    END IF   END IF   gaze_time ← current time  ELSE:   IF x ≥ 0:    gaze_list[x] ← current time–gaze_time   END IF  END IF  current_TDGV ← standard deviation of gaze list  continue to next gaze datapoint UNTIL end of measurement