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