100 lbs 150 lbs 200 lbs 250 lbs Trial One 19.5 23 30.5 35 Trial Two 13.5 28 29 31.5 Trial Three 17 26 34 34 Trial Four 17.5 24.5 33.5 37 Trial Five 18.5 29.5 32 33 Mean 17.2 26.2 31.8 34.1