cluster_id	sec_channel
0	1
1	2
2	1
3	1
4	0
5	1
6	0
7	0
8	2
9	3
10	1
11	3
12	2
13	1
14	2
15	1
16	3
17	0
18	3
19	0
20	1
21	2
22	2
23	1
24	0
25	1
26	1
27	1
28	1
29	1
30	2
31	2
32	1
33	2
34	2
35	2
36	2
37	2
38	2
39	1
40	1
41	1
42	0
43	1
44	1
45	1
46	1
47	0
48	2
49	2
50	0
51	0
52	0
53	1
54	0
55	0
56	0
57	2
58	1
59	0
60	1
61	2
62	3
63	3
64	0
65	3
66	3
67	0
68	2
69	0
70	1
71	1
72	2
73	1
74	1
75	0