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