Table:
selected characteristics
number of fire safety devices in the household:

none
1 to 2
3

percent

sex

male
1
50
45

female
1
52
40

age group

15 to 24,
f
46
41

25 to 34
1
56
36

35 to 44
f
53
43

45 to 54
1
51
45

55 to 64
0
50
46

65 and older
0
51
43

immigrant status

canadian-born
0
51
44

established immigrant
f
51
44

recent immigrant
f
65
24

visible minority status

visible minority,
f
56
35

not a visible minority
0
51
45

aboriginal identity

aboriginal
f
50
43

non-aboriginal
1
52
43

activity-limitation - long-term physical condition

yes
1
55
40

no
0
51
44

activity-limitation - long-term psychological, emotional or mental health condition

yes (often/always or sometimes),
1
61
32

no
0
51
44

household income

less than $20,000 (includes income loss),
2
65
27

$20,000 to less than $40,000
f
63
29

$40,000 to less than $60,000
f
59
37

$60,000 to less than $80,000
1
55
40

$80,000 to less than $100,000
f
52
42

$100,000 to less than $150,000
f
50
47

$150,000 and over
f
42
54

tenure

own
0
48
47

rent
1
65
27

household size

1 person,
1
63
30

2 persons
0
53
43

3 persons
f
48
45

4 persons
f
46
47

5 persons or more
f
49
42

household composition

household with senior(s)
1
51
44

household without senior(s)
1
52
42

household with child(ren),
1
48
45

household without child(ren)
1
52
42

total
1
51
42

What are the contents of cells located in column 4 of this table? The cells in a column should be presented in the JSON format of {"column_id":"<column index>", "cell_list":"<a list of cells in this column>"}, e.g., {"column_id":"3", "cell_list": ["xxx", "yyy", "zzz"]}.

The target cell values of column 4: {"column_id": "4", "cell_list": ['', '3', '', '', '45', '40', '', '41', '36', '43', '45', '46', '43', '', '44', '44', '24', '', '35', '45', '', '43', '43', '', '40', '44', '', '32', '44', '', '27', '29', '37', '40', '42', '47', '54', '', '47', '27', '', '30', '43', '45', '47', '42', '', '44', '42', '45', '42', '42']}