cluster_id	sec_channel
0	2
1	0
2	1
3	2
4	1
5	1
6	1
7	0
8	2
9	2
10	2
11	1
12	3
13	3
14	3
15	3
16	2
17	2
18	2
19	0
20	1
21	2
22	0
23	1
24	3
25	3
26	1
27	0
28	0
29	0
30	0
31	0
32	3
33	2
34	1
35	0
36	0
37	0
38	0
39	0
40	3
41	3
42	0
43	1
44	0
45	2
46	0
47	2
48	1
49	1
50	2
51	1
52	1
53	3
54	2
55	1
56	0
57	0
58	0
59	1
60	3
61	1
62	2
63	0
64	0
65	2
66	0
67	3
68	3