dual zone versus double stack

17:46

8:03

16:26

19:21

16:47

10:21

8:05

4:31

39:51

12:25

37:40

3:30

23:10

7:26

7:33

12:52

5:54

3:08

14:13

8:09

11:19

5:34

00:36

2:28

1:04

6:34

4:53

2:35

1:10

4:18

4:45

3:35

1:00

5:07

1:14

8:06

2:55

14:51

9:53

14:21

4:27

5:02

5:57

13:44

7:29

6:30

4:47

4:19

2:53

8:24

3:10

00:35

4:41

7:31

17:35

11:13

12:36

9:06

7:36

13:55