level sensors disadvantages

6:46

4:27

7:08

3:24

5:19

4:27

1:46

31:25

7:22

6:35

12:50

6:34

9:12

6:35

7:16

21:19

2:16

1:44

21:38

2:12

6:35

12:00

6:35

3:30

12:19

1:02

1:50

6:35

5:46

2:49

6:35

1:27

6:02

1:53

1:29:54

6:38

5:48

1:02:56

8:04

2:17