cluster_id	sec_channel
1	0
2	2
5	2
6	2
7	2
8	3
9	2
14	1
15	3
17	3
18	1
19	0
20	3
22	0
23	3
24	3
26	3
27	1
29	2
32	2
33	2
34	0
35	0
36	0
37	0
38	2
39	2
40	0
41	0
44	1
45	1
46	3
47	3
48	0
49	0
50	1
56	1
58	1
59	1
60	0
61	0
62	1
63	1
64	1
65	1
67	1
68	1
70	1
71	1