Table:
quantities of dried cannabis

mean
95% confidence interval

lower limit
upper limit

total grams

average
27.5
22.7
32.3

gender

males
27.6
21.3
33.9

females
27.6
20.6
34.6

age group

15 to 24
18.9
10.7
27.0

25 or older
30.0
24.5
35.6

cannabis product type

dried (flower/leaf) only
22.1
15.9
28.4

dried (flower/leaf) other
33.7
26.5
41.0

frequency of use

daily or almost daily
62.6
52.3
72.9

weekly
12.0
8.9
15.1

monthly
8.3
3.7
12.8

once or twice
2.6
1.5
3.7

Considerding the provided table image, extract the cells' values in the following postions:
row 5 and column 2,
row 18 and column 1,

Return each cell value as JSON in the format {"row_id":"m", "column_id":"n", "cell_value":"<Corresponding Cell Value>"}.

The target cell values are as follows:
{"row_id":"5", "column_id":"2", "cell_value":"27.5"}
{"row_id":"18", "column_id":"1", "cell_value":"monthly"}