finding the period and amplitude

22:30

14:06

6:45

14:04

6:45

14:15

2:26:14

8:53

1:13

1:59

16:49

18:32

3:26

11:21

10:40

19:40

15:30

25:54

3:44

3:41

1:41:18

21:44

2:29

5:57

10:47

17:44

12:00

7:40

22:19

2:29

12:22

3:40

7:21

17:22

3:37

2:41

2:24

3:30

9:23

1:35