Table:
Number of trips	Frequency

1	1

2	12

3	6

4	9

5	13

6	16

What are the contents of cells located in column 1 of this table? Show the cells in a column in the JSON format {"column_id":"<column index>", "cell_list":"<a list of cells in this column>"}. For example, {"column_id":"6", "cell_list": ["A", "B", "C"]}.

The cells in column 1: {"column_id": "1", "cell_list": ['Going to the library last month', 'Number of trips', '1', '2', '3', '4', '5', '6']}