Slope in classes of 40%. Reference: Digital height model DHM 25 from Swisstopo

Code	Text	NFI1	NFI2	NFI3	NFI4	NFI4b	NFI5
-1	n/a	x	x	x	x	x	x
1	=40%	x	x	x	x	x	x
2	41-80%	x	x	x	x	x	x
3	>80%	x	x	x	x	x	x

last calculated: 10.01.2026 00:02:35