PSI 1 2 3 4 5 Average Uncertainity 20 24.5 26.3 26.1 25.8 25.9 25.72 30 27.1 26.4 26.8 27 26.2 26.7 40 31.8 30.4 31.2 31.7 30.3 31.08 50 33.3 32.7 34 33.2 33.8 33.4 60 35.7 36.2 36.7 35.3 36.2 36.02 70 39.8 40.3 38.9 39.6 39.3 39.58 80 42.9 41.3 43.7 43 43.2 42.82 90 48 47.2 47.8 47.3 48.4 47.74 PSI Average Velocity (m/s) Uncertainity (m/s) 20 25.72 0.7 30 26.7 0.45 40 31.08 0.75 50 33.4 0.9 60 36.02 0.7 70 39.58 0.7 80 42.82 0.45 90 47.74 0.6