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