55 
Fig. 3.1:5. Terrain model point of medium 
quality. Cf. Fig. 3.1:1. 
Fig. 3.1:1 through 3.1:6. 
Cf. Fig. 3.1:1. 
Fig. 3.1:6. Terrain model point of low 
quality. Cf. Fig. 3.1:1. 
Fig. 3.1:8. Root mean square values of 
standard deviations from grid 
models. Cf. Fig. 3.1:1.