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