average excel formula exclude zero

4:06

3:37

3:33

1:31

5:23

5:09

20:48

24:56

19:37

31:20

16:26

16:39

16:26

6:30

12:53

3:38

1:52

1:37

5:04

کوتاه

6:39

کوتاه

2:57

1:48

2:08

6:38

2:29

1:15

9:45

3:19

4:27

4:14

4:14

3:39

3:27

2:06

کوتاه

8:32

1:13

7:25