Table 2.

Parameters used in height based filtering: the smoothing intensity in the lowest height class (low) and in the highest class (high), and the number of height classes (height fixed to 6 meters).

Sample plot	σ low	σ high	Number of height classes
1	0.4	2.2	4
2	0.8	1.8	5
3	0.4	1.6	4
4	1	1.1	5
5	0.8	1.3	5
6	1	1.1	5
7	0.4	2.4	5
8	0.4	1.8	5
9	0.4	1.2	5
10	1	1.2	5
11	0.4	1.3	5
12	0.6	1.8	4
13	0.4	1.4	4
14	0.4	1.6	4