z score problems

16:17

10:36

15:12

2:47

12:27

5:04

2:47

1:01:27

2:05

23:20

16:01

4:25

9:34

7:18

47:46

11:28

4:35

11:15

23:05

7:54

59:41

14:41

50:04

4:45

7:49

29:35

7:18

12:54

3:24

50:04

9:12

1:40

3:21

6:07

7:40

53:27

18:34

7:37

3:56

2:07