calculation of mean by step deviation method

8:19

6:40

8:41

32:12

2:10

3:47

23:57

کوتاه

6:49

10:00

10:00

10:00

10:00

5:22

10:00

25:24

10:07

10:00

10:00

7:18

8:59

15:43

10:04

9:58

10:56

8:01

8:35

2:22

2:22

11:02

3:12

10:27

6:59

11:27

2:03

11:47

5:03

4:30

7:01

9:21