Table:
undergraduate degree
graduate degree

unadjusted gap
adjusted gap
unadjusted gap
adjusted gap

model a
model b
model a
model b

percent

cohort

2006
-1.9
-1.8
-0.6
-5.8
-3.7
1.7

2007
-0.5
0.6
0.7
-15.8
-13.1
-8.2

2008
..
..
..
..
..
..

2009
-7.6
-7.3
-7.8
-9.8
-8.1
-9.4

2010
-7.7
-7.2
-10.0
-13.6
-9.8
-8.4

2011
-10.1
-8.5
-11.1
-3.2
2.1
0.5

According to the table image, show the cell contents in the 3rd row. Show the cells in a row in the JSON format {"row_id":"<row index>", "cell_list":"<a list of cells in this row>"}. For example, {"row_id":"1", "cell_list": ["A", "B", "C"]}.

The target cell values of the 3rd row: {"row_id": "3", "cell_list": ['', '', 'model a', 'model b', '', 'model a', 'model b']}