Distance(cm) Elevation(cm) 0 13 2.5 13 5 12.3 7.5 12.4 10 12.2 12.5 13.2 15 13.4 17.5 12.9 20 13.3 22.5 13.1 25 12.8 27.5 12.5 30 12.7 32.5 12.1 35 12.2 37.5 12.7 40 12.6 42.5 12.5 45 12.4 47.5 12.6 50 12.6 52.5 12.5 55 12.1 57.5 12.1 60 11.4 62.5 11.9 65 12.9 67.5 13.2 70 13.9 72.5 12.8 75 13.1 77.5 12.7 80 12 82.5 11.9 85 11.8 87.5 12.1 90 12 92.5 11.6 95 11.5 97.5 12.6 100 12.3