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American Relative Sunspot Numbers for December 2001

DayMn. Raw Ras.d.       Mn. Rak  s.d.
1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31
222

200

224

208

216

206

197

203

182

159

140

170

171

150

178

175

181

158

130

150

188

195

201

207

209

250

249

227

195

198

192
11.4

9.3

10.9

14.6

12.2

12.5

11.2

10.2

10

11

9.3

8.2

10

9.8

14.4

7.4

12.7

13

8.7

10.3

10.7

10.3

10.1

9.5

11.1

12.2

13.9

13.4

12.5

9.9

8.3
  173

163

175

167

174

163

164

163

146

123

113

130

137

118

134

139

133

118

101

113

148

156

162

169

178

195

198

181

149

159

155
5.6

5.5

4.6

6.4

4.9

5.2

6.4

4.9

4.9

5

3.8

4

5.2

6.1

6.6

3.2

6.2

5.4

4

4.9

3.3

5.1

4.4

6.4

6.6

5.9

7.8

6.7

5.8

5.6

3.7
Means:191.4  151.5 
No. of Observations: 797
No. of Observers: 57

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