calculate the covariance with r

9:49

6:35

5:30

15:13

14:15

10:25

11:35

3:28

2:15

14:15

11:09

11:09

4:08

1:54

5:07

5:07

3:54

1:54

1:54

6:39

24:06

5:59

5:59

4:30

4:30

3:50

22:23

19:12

5:48

51:54

10:42

کوتاه

4:23

5:12

25:19

7:57

کوتاه

21:55

4:28

28:05