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American Relative Sunspot Numbers for April 2006
| Day |
N |
Raw Mean |
Ra |
| 1 |
28 |
51 |
38 |
| 2 |
32 |
58 |
43 |
| 3 |
24 |
68 |
49 |
| 4 |
28 |
81 |
56 |
| 5 |
20 |
79 |
56 |
| 6 |
27 |
76 |
58 |
| 7 |
32 |
67 |
50 |
| 8 |
35 |
57 |
41 |
| 9 |
31 |
48 |
35 |
| 10 |
25 |
54 |
42 |
| 11 |
29 |
60 |
43 |
| 12 |
29 |
61 |
44 |
| 13 |
32 |
58 |
43 |
| 14 |
34 |
43 |
32 |
| 15 |
34 |
29 |
21 |
| 16 |
25 |
17 |
13 |
| 17 |
33 |
13 |
10 |
| 18 |
33 |
11 |
8 |
| 19 |
32 |
3 |
2 |
| 20 |
29 |
17 |
12 |
| 21 |
20 |
13 |
9 |
| 22 |
28 |
3 |
2 |
| 23 |
26 |
11 |
8 |
| 24 |
31 |
21 |
15 |
| 25 |
26 |
41 |
30 |
| 26 |
35 |
54 |
40 |
| 27 |
31 |
64 |
46 |
| 28 |
31 |
58 |
42 |
| 29 |
23 |
49 |
37 |
| 30 |
31 |
59 |
42 |
| 31 |
--- |
--- |
--- |
| Means: |
29.1 |
44.1 |
32.2 |
Total No. of Observers: 55
Total No. of Observations: 874
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