AAVSO HOME > observing > programs > solar > sunspot numbers > apr 02
 
 
 
Observing
Observing Programs
  Visual
  CCD
  Exoplanet Transit Search
  High Energy Network
  Photoelectric (PEP)
  Infrared Photometry
  Supernova Search
  Nova Search
  Eclipsing Binary
  RR Lyrae
  Sunspots and SID
  Observing Campaigns
Observing Aids
Submit Observations
Charts
 
Main sections of web
The AAVSO
Variable Stars
Observing
Access Data
Publications
Support
Education and Outreach
 
Pick a star

Create a light curve
Recent Observations
Find charts
VSX      
 

American Relative Sunspot Numbers for April 2002

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

172

164

182

160

175

186

186

195

194

201

220

212

215

200

184

155

139

158

143

140

125

140

166

208

195

152

120

104

107

113

7.6

8.1

11.5

7.5

9

8.1

6.7

9.3

8.9

7.8

8.2

10.3

11

9.4

8.1

6.9

5.6

6.7

7.7

7.4

6.2

5.9

5.9

7.6

10.6

9.1

5.4

6.3

6.1

5.4

  130

124

128

117

130

140

147

149

152

152

163

162

159

152

139

117

106

116

111

104

99

102

125

162

146

110

88

77

79

89

2.9

2.6

3.6

2.9

4.5

3.5

3.1

4.1

4.2

2.8

3.9

3.4

4.5

3.7

2.8

2.9

2.3

2.7

3.3

3.8

3.4

2.3

3.7

4.4

5.4

3.8

2.3

3.2

3.2

2.8

Means:167.1  125.8 
No. of Observations: 1157
No. of Observers: 78

Return to AAVSO Solar Committee page.

 
  search engine |  site map |  links |  contact us