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American Relative Sunspot Numbers for September 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

144

153

157

164

182

214

255

260

241

214

206

218

231

199

187

171

159

189

202

245

238

264

284

266

284

259

242

246

229

225

5.2

5.4

5

7.5

7.4

8.9

12.5

12.7

13

11.8

12.8

10.8

12.7

8.9

8.7

8.8

7.6

8.6

8.8

9.4

10.6

11.5

13.3

14.8

12.5

11.2

9.5

8.2

8.7

11.3

  122

126

130

130

145

171

206

208

190

176

161

170

184

168

149

135

125

151

157

193

192

206

221

211

219

201

191

193

186

183

2.5

3.1

2.7

3.7

3.8

4.4

6.4

6.6

6.8

6.2

6.2

4.6

5.7

5.2

4.3

3.5

3.4

5.5

3.9

3.9

4.5

4.5

5.6

5.3

5

5.4

4.9

4.8

4.8

5.9

Means:217.6  173.3 
No. of Observations: 1104
No. of Observers: 68

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