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