eg and fg elevation on grid surface

2:34

2:34

3:46

5:04

1:15:06

1:53

6:31

3:06

1:29

13:45

10:17

3:56

2:00

3:20

1:36

12:01

11:22

13:37

9:53

3:20

1:42

7:26

15:55

12:37

11:17

8:45

7:29

17:30

17:24

1:36

2:00

14:57

9:16

11:36

26:25

1:01

12:20

12:20

2:18

7:58