Any bricklayers out there?, page-116

	Column 1	Column 2	Column 3	Column 4	Column 5	Column 6	Column 7
0	.1070	15,000	1,605.00	965,246,836
1	15:44:08	0.1070	50,000	5,350.00	965,217,393
2	15:28:02	0.1070	1	0.10	965,163,977	CX CX
3	15:27:59	0.1070	1	0.10	965,163,736	CX CX
4	15:27:57	0.1070	6	0.64	965,163,646	CX CX
5	15:27:55	0.1070	1	0.10	965,163,596	CX CX
6	15:27:54	0.1070	19	2.03	965,163,517	CX CX
7	15:27:52	0.1070	1	0.10	965,163,469	CX CX
8	15:27:51	0.1070	56	5.99	965,163,389	CX CX
9	15:27:45	0.1070	118	12.62	965,163,039	CX CX
10	15:27:38	0.1070	20,000	2,140.00	965,162,750
11	15:22:00	0.1070	1	0.10	965,145,738	CX CX
12	15:21:58	0.1070	3	0.32	965,145,570	CX CX
13	15:21:56	0.1070	1	0.10	965,145,502	CX CX
14	15:21:55	0.1070	6	0.64	965,145,422	CX CX
15	15:21:53	0.1070	1	0.10	965,145,344	CX CX
16	15:21:51	0.1070	15	1.60	965,145,264	CX CX
17	15:21:46	0.1070	27	2.88	965,145,003	CX CX
18	15:21:42	0.1070

is there anyone who can help me understand this course of FBR trades from yesterday? I know they are broker cross trades, but the amounts have me questioning what it means, and what I can learn from this type of action.
cheers.