using excel to calculate mean

3:28

15:11

5:15

5:30

1:44

8:29

4:15

4:15

2:16

7:27

16:07

18:37

12:47

2:14

5:46

7:47

5:04

2:34

13:34

10:28

4:02

12:39

4:37

11:23

5:10

8:59

3:24

12:55

6:39

12:58

کوتاه

11:35

6:39

4:31

11:17

3:52

8:21

23:27

11:54

11:06