Height resp. depth Area Number of Possible
interval mill. surface the lev. contour values
km km2 of earth surf to
% be repr.
+ 59 0.5 0.1
+ 45 2.2 0.4 (1) 5000
+ 34 5.8 1.1
+ 23 11.2 2.2 1 3000
+ 12 22.6 4.5 12 1500, (2000)
+ 01 105.8 20.7 7 0, 25, 50, 100, 200, 500, 1000
Dry land 148.1 29.0 911 10 (11)
00.2 27.1 5.3 2 100, 200
0.21 16.0 3.1 1 1000
12 15.8 3.1 1 2000
23 30.8 6.1 2 2500, 3000
34 75.8 14.8 5 3200, 3400, 3600, 3800, 4000
45 114.7 22.6 78 4200, 4300, 4400, 4500, 4600
4700, 4800, 4900, 5000
56 76.8 15.0 5 5200, 5400, 5600, 5800, 6000
67 4.5 0.9 (1) 7000
711 0.5 0.1
Ocean 362.0 71.0 2426 25