DEM vs GPS elevation walking 10.7 10.6 10.2 9.9 9.8 9.8 10.0 10.0 9.9 9.8 9.7 9.6 9.5 9.5 9.4 9.4 9.6 9.9 10.1 10.3 10.6 11.1 11.5 11.8 12.1 12.3 12.5 12.7 12.8 13.0 13.2 13.4 13.7 13.8 13.8 13.8 13.8 13.8 13.8 14.0 14.2 14.5 14.8 15.0 15.2 15.4 15.6 15.9 16.1 16.4 16.5 16.8 17.0 17.3 17.6 17.8 18.0 18.2 18.4 18.6 18.7 18.9 19.0 19.1 19.3 19.4 19.5 19.5 19.5 19.5 19.5 19.5 19.5 19.4 19.4 19.4 19.4 19.4 19.5 19.5 19.6 19.6 19.7 19.9 19.9 20.0 20.2 20.3 20.5 20.7 20.9 21.1 21.4 21.8 22.2 22.7 23.1 23.5 23.8 24.0 24.1 24.2 24.1 24.0 23.8 23.7 23.7 23.8 24.0 24.3 24.5 24.6 24.8 24.9 25.0 25.1 25.1 25.1 25.0 25.0 25.0 25.0 25.0 25.0 24.9 24.7 24.5 24.3 24.1 23.9 23.7 23.5 23.5 23.5 23.6 23.6 23.8 23.8 23.8 23.8 23.8 23.7 23.6 23.5 23.4 23.3 23.2 23.2 23.1 23.1 23.1 23.1 23.3 23.5 23.8 24.1 24.6 25.0 25.4 25.6 25.9 26.3 26.5 26.9 27.5 27.8 28.3 28.6 28.9 29.1 29.2 29.2 29.2 29.1 29.1 29.0 29.0 28.9 28.9 28.7 28.5 28.3 28.2 28.1 28.1 28.3 28.5 28.8 29.0 29.3 29.4 29.2 28.8 28.3 28.0 27.6 27.3 27.0 26.5 26.2 25.9 25.7 25.5 25.3 25.1 24.9 24.7 24.6 24.4 24.2 24.0 23.7 23.4 23.1 22.8 22.5 22.3 22.1 22.0 22.0 22.2 22.3 22.4 22.4 22.4 22.3 22.2 22.1 22.1 22.0 22.0 22.1 22.3 22.6 22.8 23.1 23.2 23.4 23.5 23.6 23.7 23.8 23.9 23.9 24.0 24.0 24.1 24.1 24.1 24.1 24.1 24.1 24.1 24.1 24.1 24.1 24.1 24.1 24.2 24.2 24.2 24.3 24.3 24.4 24.5 24.6 24.8 25.0 25.1 25.2 25.3 25.4 25.5 25.6 25.7 25.7 25.8 25.9 26.0 26.0 26.2 26.3 26.5 26.6 26.7 26.9 27.1 27.3 27.5 27.8 28.1 28.3 28.6 28.8 29.1 29.3 29.5 29.5 29.5 29.5 29.5 29.4 29.5 29.5 29.6 29.7 29.9 30.2 30.5 30.7 30.9 31.1 31.3 31.5 31.6 31.7 31.8 31.9 32.1 32.3 32.5 32.8 33.1 33.3 33.6 34.0 34.4 34.8 35.1 35.1 35.4 35.7 36.0 36.4 36.7 37.1 37.4 37.8 38.1 38.4 38.6 38.9 39.2 39.4 39.5 39.7 39.8 39.8 39.8 39.8 39.9 40.1 40.4 40.6 40.9 41.5 42.0 42.5 42.8 42.9 43.2 43.4 43.5 43.6 43.7 43.8 44.0 44.3 44.9 45.4 45.9 46.3 46.7 47.1 47.5 47.7 48.0 48.2 48.3 48.3 48.3 48.2 48.1 48.0 47.8 47.7 47.6 47.4 47.1 46.8 46.6 46.3 46.1 45.9 45.7 45.4 45.3 45.2 45.1 44.8 44.6 44.4 44.2 44.0 43.9 43.7 43.4 43.3 43.1 43.0 42.9 42.8 42.5 42.3 41.9 41.5 41.2 40.8 40.4 40.0 39.7 39.4 39.3 39.0 38.7 38.5 38.3 38.1 37.9 37.7 37.5 37.2 37.1 36.9 36.7 36.4 36.1 35.8 35.4 35.1 34.9 34.6 34.5 34.5 34.4 34.3 34.2 34.1 34.0 34.0 34.0 34.0 34.0 34.0 33.9 33.9 33.9 33.8 33.7 33.7 33.6 33.6 33.5 33.5 33.5 33.6 33.7 33.8 34.0 34.2 34.4 34.6 34.8 35.0 35.2 35.5 35.7 35.7 35.8 35.9 36.0 36.1 36.3 36.4 36.5 36.6 36.8 36.9 37.0 37.0 37.1 37.1 37.2 37.2 37.2 37.2 37.2 37.2 37.1 37.1 37.2 37.2 37.2 37.2 37.2 37.2 48.0 47.9 47.5 47.3 46.5 37.2 37.2 37.2 37.1 37.1 37.0 37.0 36.9 36.8 36.7 36.5 36.3 36.1 35.8 35.6 35.3 35.0 34.8 34.5 34.2 34.0 33.8 33.7 33.5 33.4 33.2 33.1 33.0 33.0 32.9 32.8 32.6 32.5 32.3 32.2 32.0 31.9 31.7 31.6 31.4 31.2 31.0 30.9 30.7 30.4 30.2 30.1 29.9 29.7 29.6 29.4 29.3 29.1 29.0 28.8 28.6 28.4 28.3 28.1 27.9 27.7 27.6 27.4 27.3 27.2 27.1 27.0 27.0 27.0 27.0 27.0 27.1 27.1 27.1 27.1 27.1 27.0 27.0 26.8 26.7 26.5 26.4 26.3 26.3 26.3 26.3 26.3 26.4 26.4 26.3 26.2 26.0 25.8 25.6 25.4 25.1 24.9 24.7 24.5 24.3 24.1 24.0 23.9 23.4 23.4 23.3 23.1 23.1 23.1 23.1 23.1 23.1 23.0 23.0 23.1 23.5 23.5 23.6 23.6 23.6 23.5 23.3 23.2 23.1 23.0 22.9 22.8 22.7 22.5 22.5 22.3 22.1 21.9 21.6 21.4 21.2 20.9 20.6 20.2 20.0 19.9 19.7 19.6 19.4 19.2 19.0 18.8 18.5 18.3 18.0 17.7 17.4 17.2 16.8 16.5 16.3 15.9 15.6 15.3 15.0 14.7 14.4 14.2 13.8 13.5 13.2 12.8 12.4 12.0 11.8 11.5 11.4 11.1 10.9 10.5 10.2 9.9 9.5 9.1 9.0 8.9 9.1 8.7 8.3 8.0 7.7 7.3 7.0 6.5 6.1 5.9 5.5 4.9 4.4 4.0 4.2 4.4 4.7 5.1 5.5 5.8 5.9 5.9 5.9 6.1 6.2 6.2 6.1 5.9 5.9 5.9 6.1 6.2 6.0 6.0 6.0 6.0 6.1 6.1 6.0 5.8 5.5 5.3 5.1 4.9 4.8 4.6 4.3 4.0 3.7 3.6 3.6 3.5 3.7 4.2 4.5 4.5 4.6 4.7 4.6 4.5 4.4 4.3 4.4 4.5 4.4 4.4 4.3 4.3 4.2 4.0 3.8 3.6 3.5 3.3 3.3 3.3 3.4 3.4 3.5 3.5 3.5 3.5 3.4 3.2 3.1 2.9 3.0 3.2 3.4 3.5 3.7 3.8 4.0 4.1 4.3 4.5 4.7 4.8 4.9 4.9 4.9 4.8 4.7 4.7 4.6 4.6 4.5 4.5 4.6 4.7 4.8 5.0 5.2 5.2 5.2 5.2 5.1 5.1 5.2 5.4 5.6 5.9 6.1 6.4 6.6 6.7 6.8 7.3 7.6 7.8 7.8 7.7 7.8 7.8 7.8 7.7 7.5 7.4 7.4 7.3 7.2 7.1 7.0 7.1 7.1 6.9 7.1 6.9 6.4 5.8 5.2 4.7 4.5 4.4 4.4 4.4 4.4 4.4 4.4 4.5 4.5 4.5 4.5 4.5 4.4 4.4 4.3 4.2 4.1 4.0 3.8 3.7 3.5 3.3 3.1 2.9 2.9 3.0 3.2 3.3 3.4 3.5 3.5 3.5 3.4 3.4 3.5 3.5 3.5 3.6 3.5 3.5 3.6 3.6 3.6 3.7 3.9 4.1 4.2 4.2 4.0 4.0 3.9 3.9 3.9 3.9 3.9 3.9 3.9 3.9 3.8 3.8 3.9 4.0 4.1 4.1 4.0 3.9 3.7 3.5 3.4 3.3 3.2 3.2 3.2 3.4 3.6 3.7 3.8 4.0 4.2 4.3 4.4 4.5 4.6 4.5 4.4 4.3 4.4 4.3 4.3 4.2 4.1 4.0 3.9 3.8 3.8 3.7 3.6 3.5 3.5 3.5 3.6 3.5 3.5 3.4 3.3 3.1 3.0 2.9 2.8 2.7 2.6 2.7 2.8 2.9 3.0 3.2 3.3 3.4 3.6 3.7 3.7 3.7 3.7 3.8 3.8 3.7 3.4 3.3 3.2 3.2 3.3 3.3 3.3 3.3 3.1 3.0 2.9 2.9 2.7 2.5 2.5 2.4 2.4 2.3 2.3 2.4 2.4 2.5 2.7 2.9 3.0 3.2 3.3 3.4 3.6 3.7 3.7 3.8 3.8 3.8 3.8 3.9 4.2 4.3 4.6 4.8 4.9 5.1 5.2 5.3 5.4 5.5 5.6 5.6 5.6 5.7 5.8 5.9 5.9 5.9 6.0 6.1 6.3 6.3 6.4 6.5 6.6 6.7 6.6 6.5 6.3 6.1 5.9 5.9 5.8 5.8 5.6 5.4 5.2 5.0 4.9 4.9 4.9 4.7 4.6 4.4 4.2 3.8 3.8 3.6 3.3 3.0 2.7 2.4 2.2 2.0 1.8 1.6 1.4 1.3 1.2 1.0 0.9 0.8 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0.0 -0.1 -0.1 -0.1 -0.1 -0.1 -0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -0.1 -0.1 -0.1 -0.1 -0.1 -0.1 -0.1 -0.1 -0.1 -0.1 -0.1 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.1 0.0 0.1 0.1 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 -0.1 -0.1 -0.1 -0.1 -0.1 -0.1 -0.1 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.1 -0.1 0.0 0.1 0.1 0.2 0.2 0.3 0.4 0.4 0.5 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.5 0.5 0.5 0.5 0.5 0.5 0.6 0.6 0.6 0.6 0.7 0.8 0.8 0.9 0.9 1.0 1.1 1.2 1.3 1.5 1.6 1.8 1.9 2.1 2.4 2.3 2.3 2.3 2.4 2.4 2.5 2.5 2.7 2.7 2.8 2.8 2.9 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.1 3.2 3.1 3.2 3.1 3.0 3.1 3.3 3.3 3.1 2.9 2.7 2.5 2.4 2.5 2.6 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.5 3.6 3.7 3.6 3.6 3.8 3.8 3.9 4.0 4.0 4.1 4.1 4.2 4.1 4.0 3.8 3.6 3.5 3.3 3.3 3.3 3.2 3.1 3.0 2.9 2.9 3.1 3.5 3.8 4.1 4.5 4.8 5.2 5.6 5.9 6.2 6.4 6.6 6.8 6.9 7.0 7.2 6.8 6.6 6.6 6.5 6.4 6.5 6.8 6.8 8.5 8.8 9.0 9.3 9.5 9.7 9.9 10.2 10.3 10.6 10.9 11.2 11.4 11.6 11.7 11.9 12.0 12.1 12.2 12.2 12.3 12.4 12.4 12.6 12.7 12.9 13.0 13.1 13.2 13.2 13.3 13.3 13.4 13.4 13.5 13.5 13.5 13.5 13.5 13.4 13.3 13.2 13.0 12.9 12.7 12.4 12.1 11.7 11.3 10.9 10.5 10.3