JANUARY 2012
PROVISIONAL INTERNATIONAL NORMALIZED HEMISPHERIC SUNSPOT NUMBERS
Date Ri Rn Rs
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1 44 0 44
2 57 14 43
3 74 31 43
4 78 42 36
5 67 45 22
6 70 54 16
7 70 50 20
8 64 49 15
9 49 42 7
10 43 43 0
11 39 39 0
12 32 32 0
13 44 35 9
14 73 48 25
15 92 62 30
16 95 71 24
17 87 58 29
18 78 53 25
19 65 50 15
20 63 63 0
21 69 69 0
22 67 67 0
23 70 70 0
24 53 53 0
25 47 47 0
26 30 30 0
27 40 24 16
28 28 20 8
29 35 18 17
30 38 29 9
31 46 35 11
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MONTHLY MEAN : 58.3 43.3 15.0
COOPERATING STATIONS : 68 64 64
PILOT STATION : Specola Solare Ticinese, Locarno
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Reproduction permitted if source mentionned
Frédéric Clette