Your conditions will rarely match a printed row or column. Use the trainer to generate conditions and test your ability to interpolate.
Cessna 152 short-field takeoff, 1,670 lb, total distance over a 50-ft obstacle, in feet. Flaps 10°, full throttle before brake release, paved level dry runway, no wind.
Interpolation assumes the relationship between printed values is linear. It isn't, so even the exact answer is an estimate.