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Table 3 Evaluation results of the three unchanging sites

From: Discovering forest height changes based on spaceborne lidar data of ICESat-1 in 2005 and ICESat-2 in 2019: a case study in the Beijing-Tianjin-Hebei region of China

Evaluation site

Track line

Mean height

Bias

RMSE

2019

2005

Site 1

Line1

14.8

21.1

−6.3

13.5

Line2

17.2

24.8

−7.6

14.5

Line3

19.1

21.7

−2.6

12.0

Line4

25.7

22.7

3.0

10.2

Line5

26.5

24.3

2.2

8.6

Line6

28.4

25.1

3.3

7.9

Average

21.5

23

−1.5

11.6

Site 2

Line7

15.9

21.3

−5.4

13.0

Line8

21.7

24.2

−2.5

11.5

Line9

15.9

23.9

−8.0

12.1

Line10

26.9

22.8

4.1

9.2

Line11

29.3

23.1

6.2

10.4

Line12

25.6

24.6

1.0

7.4

Line13

27.3

22.8

4.5

10.7

Line14

24.7

22.1

2.6

7.2

Line15

23.1

24.1

−1.0

6.4

Average

22.7

23.3

−0.6

10.2

Site 3

Line16

26.6

28.2

−1.6

6.1

Line17

25.2

22.9

2.3

15.2

Line18

19.9

22.8

2.9

11.8

Line19

25.2

23.9

1.3

12.4

Line20

22.6

23.8

−1.2

10.6

Line21

24.3

27.1

−2.8

13.7

Line22

26

25.7

0.3

10.6

Line23

24.7

21.3

3.4

8.7

Line24

26.2

23.2

3.0

12.6

Average

24.9

23.8

1.1

12.0