Pressure (PSI) 5.5 6 6.5 7 7.5 8 8.5 9 Trial 1 (cm) 23 32 38 45 52 59 64 69 Trial 2 (cm) 22 31 40 43 54 60 64 70 Trial 3 (cm) 23 34 38 45 55 57 65 68 Trial 4 (cm) 24 33 37 46 53 57 66 69 Trial 5 (cm) 21 33 39 44 54 59 64 71 Average (cm) 22.6 32.6 38.4 44.6 53.6 58.4 64.6 69.4 5.5 6 6.5 7 7.5 8 8.5 9 22.6 32.6 38.4 44.6 53.6 58.4 64.6 69.4