Distance(cm) Elevation(cm) 0 13 2.5 13.5 5 12.7 7.5 13.1 10 12.5 12.5 12.5 15 12.3 17.5 12.2 20 12 22.5 12.3 25 12.2 27.5 12.3 30 12.4 32.5 12.1 35 11.7 37.5 12.5 40 12.9 42.5 12.8 45 11.9 47.5 12.3 50 12.3 52.5 11.8 55 12.1 57.5 11.7 60 11.5 62.5 11.9 65 11.9 67.5 12.5 70 12.1 72.5 11.6 75 12.8 77.5 12.4 80 12.1 82.5 11.9 85 11.7 87.5 11.8 90 11.5 92.5 11.7 95 11.3 97.5 11.1 100 12.1