Table 1: Means and Standard Deviations of the Sum of the Corresponding Top and Bottom Mark Area (Pixels) Data Grouped by Load Level (Newtons) - Rounded to the Nearest Pixel

Force (N)
25 50 100 150 200
Mean 69 136 243 300 414
SD 151 246 281 333 364
250 300 350 400 450
Mean 505 588 644 732 733
SD 378 382 338 367 359